Answer:
This equation, i = v/r, tells us that the current, i, flowing through a circuit is directly proportional to the voltage, v, and inversely proportional to the resistance, r. In other words, if we increase the voltage, then the current will increase.
HOPE THIS HELPED!!!!!!!!!!!!!!XDDDDDD
A student observed a sample of water in three states of matter. The student should describe the liquid water as a state of matter that has
A. less kinetic energy than the solid state.
B. less volume than the solid state.
c. more mass than the solid state.
D. more kinetic energy than the solid state.
Answer:
B. Less volume than a solid state
Liquid water, in its state of matter, has more kinetic energy than when it is in a solid state, as particles move more freely in a liquid state which increases the kinetic energy.
Explanation:In the three states of matter, solid, liquid, and gas, the amount of kinetic energy differs. For water, as a liquid state, it possesses more kinetic energy than in a solid state. Kinetic energy relates to movement; in a solid state, particles are tightly packed and do not move much, thus having less kinetic energy.
When it changes to a liquid state, the particles gain energy, move more freely, increasing the kinetic energy. However, the transition from solid to liquid does not affect mass or volume significantly. Thus, the correct answer is D. more kinetic energy than the solid state.
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A force of 20 newtons is required to push a 30 kg cart 40 meters across a room. From this effort, how many joules of work are performed?
Answer: 800 Joules
Explanation:
The Work [tex]W[/tex] done by a Force [tex]F[/tex] refers to the release of potential energy from a body that is moved by the application of that force to overcome a resistance along a path with distance [tex]d[/tex].
Work is a scalar, and its unit in the International System of Units is the Joule (like energy). Therefore, 1 Joule is the work done by a force of 1 Newton when moving an object, in the direction of the force, along 1 meter:
[tex]1J=(1N)(1m)=Nm[/tex]
Now, when the applied force is constant and the direction of the force and the direction of the movement are parallel (as this case), the equation to calculate it is:
[tex]W=(F)(d)[/tex]
Where:
[tex]F=20 N[/tex]
[tex]d=40 m[/tex]
Then:
[tex]W=(20 N)(40 m)[/tex]
[tex]W=800 Nm=800 J[/tex]
Place these bodies of our solar system in the proper order of formation.
outer planets
Inner plants
solar nebula
the Sun
planetesimals
Answer:
solar nebula, the sun, planetesimals, inner planets, and last but not least outer planets
Answer:
1. Solar Nebula
2. The Sun
3. Planetesimals
4. Inner planets
5. Outer planets
Explanation:
A star is formed in a molecular cloud of gas and dust, mainly composed of hydrogen and helium. The Nebular Theory establishes, for the formation of the solar system, that the cloud starts to collapse under its own gravity when it receives a shock wave from a near event, for example, a supernova explosion. That results in the cloud breaking in small pieces, and those pieces constitute a possible future star.
Then it begins to accrete and rotate as a consequence of the angular momentum. In the center of that disk when it reaches the necessary temperature and pressure a protostar will born.
Around the star, in this case the Sun, fragments of dust combine until they get a meaningful size (planetesimals). According with chemical distribution on the disk of the future solar system, rocky and iron were closer to the Sun and gasses and ice were in the outer part of disk. That may explain why the inner planets are terrestrial and the outer planets are giant gasses.
What is the value of work done on an object when a 50–newton force moves it 15 meters in the same direction as the force?
A.
435 joules
B.
97.3 joules
C.
750 joules
D.
693 joules
Answer:
Work done, W = 750 joules
Explanation:
It is given that,
Force acting on the object, F = 50 N
It moves to a distance of, d = 15 meters
We need to find the work done on an object. We know that the product of force and distance covered is called the work done. As the force and the displacement are in same direction. So,
[tex]W=F\times d[/tex]
[tex]W=50\ N\times 15\ m[/tex]
W = 750 joules
So, the work done on an object is 750 joules. Hence, this is the required solution.
Final answer:
The work done on the object is 750 joules, calculated by the formula work equals force times distance, using the given values of a 50-newton force and a 15-meter distance.
Explanation:
The work done on an object can be calculated by using the formula W = F × d × cos(θ), where W is the work done, F is the force applied, d is the distance over which the force is applied, and θ is the angle between the force and the direction of motion. Since the force and the direction of motion are the same in this case, θ = 0 degrees and cos(0) = 1, thus the equation simplifies to W = F × d. The force exerted is 50 newtons, and the distance is 15 meters, so the work done on the object is W = (50 N) × (15 m) = 750 joules.
suppose you found a yellow piece of metal in a stream how can you tell if it's real gold
Answer: you can tell if its gold by seeing if the rock it is found in is quartz. or you could put the gold up to a magnet, if it is real gold, it will not stick.
Explanation:
The metal piece found can be tested to clear whether it is gold or not by performing some qualitative analysis using nitric acid. If its dust dissolve in the acid, then it is not gold.
What is gold?Gold is a transition metal and it is 79th element in periodic table. Gold exhibits all the metallic properties such as malleability, ductility, luster, color etc. Thus, it is widely used to make ornaments.
To test whether the yellow piece of metal is gold or not rub it on a black stone to leave a recognizable mark in order to conduct this test. Apply nitric acid to the mark after that. Any base metals that aren't genuine gold will dissolve in the acid.
Similarly a few drops of vinegar is applied to the item. It is not pure gold if the drops cause the metal to change hue. It is pure gold if the color remains the same.
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The purpose of the little Albert experiment?
Answer:
The aim of Watson and Rayner was to condition a phobia in an emotionally stable child.
Explanation:
Does this help?
Final answer:
The Little Albert experiment aimed to demonstrate that fears could be conditioned through classical conditioning, challenging Freud's theory about phobias originating from internal conflicts.
Explanation:
The purpose of the Little Albert experiment conducted by John B. Watson and Rosalie Rayner was to demonstrate how emotions could be conditioned through classical conditioning. In the experiment, Little Albert was exposed to, and eventually conditioned to fear, various stimuli that were initially neutral to him, such as a white rat. The loud noise of a hammer striking a metal bar served as the unconditioned stimulus (UCS), the white rat was the conditioned stimulus (CS), the fear response to the loud noise was the unconditioned response (UCR), and the fear response to the rat was the conditioned response (CR). Through stimulus generalization, Little Albert's fear extended to other furry objects like a rabbit, a coat, and a Santa Claus mask. This experiment aimed to illustrate that phobias could be formed not by deep-seated conflicts, as Freud suggested, but through simple conditioning. The methodology and ethical considerations of this study have been widely criticized in modern times.
When the air density is 0 kg/m°(vacuum), how long will it take an object to reach terminal velocity?
a. It reaches terminal velocity immediately.
b. 2 seconds
5 Seconds
d. The object never reaches terminal velocity.
Answer:
d. The object never reaches terminal velocity.
Explanation:
Terminal velocity is the velocity a falling object reaches when the air resistance equals the weight. But in a vacuum, there is no air resistance. So the object never reaches terminal velocity.
The velocity of a an object in linear motion changes from +25 meters per second to +15 meters per second in 2.0 seconds.
Answer:
[tex]-5.0 m/s^2[/tex]
Explanation:
Missing question:
What is the object's acceleration?
Solution:
The acceleration of an object is given by
[tex]a=\frac{v-u}{t}[/tex]
where
v is the final velocity
u is the initial velocity
t is the time taken for the change in velocity
For the object in this problem,
u = +25 m/s
v = +15 m/s
t = 2.0 s
Substituting,
[tex]a=\frac{15-25}{2}=-5.0 m/s^2[/tex]
And the acceleration is negative because its direction is opposite to that of the velocity.
6. Light is characterized by which two properties?
Final answer:
Light exhibits wave-like properties, such as wavelength and frequency, as well as particle-like properties represented by photons, illustrating the wave-particle duality.
Explanation:
Light is characterized by its wave-like properties and particle-like properties, a concept known as wave-particle duality. As a wave, light is described by properties such as wavelength (the distance between consecutive peaks of the wave) and frequency (the number of wavelengths that pass a point in a given time).
Light's behavior as a particle is evident in phenomena like the photoelectric effect, where light is seen to consist of particles called photons.The combination of wave and particle properties provides a comprehensive framework for explaining the diverse behaviors observed in different experimental contexts.
The Pacific Giant Kelp grows at a rate of 18 in/day. How many centimeters per hour is this?
For this case we must do a conversion. By definition we have to:
1 inch equals 2.54 centimeters
1 day equals 24 hours.
So, we have:[tex]18 \frac {in} {day} * \frac {1} {24} \frac {day} {h} * \frac {2.54} {1} \frac {cm} {in} =[/tex]
Canceling units we have:
[tex]\frac {18 * 1 * 2.54} {24 * 1} \frac {cm} {h} =\\\frac {45.72} {24}\frac {cm} {h} =[/tex]
[tex]1,905 \frac {cm} {h}[/tex]
Answer:
[tex]1,905 \frac {cm} {h}[/tex]
Answer:
1.905cm
explanation:
70 POINTS PLEASE HELP
I will report any answers that are incomplete or wrong
List the four fundamental forces. Give an example of a phenomenon that illustrates two of the forces.
Answer:
Gravitational force, Weak Nuclear force, Electromagnetic force and Strong Nuclear force. The weak and strong forces are effective only over a very short range and dominate only at the level of subatomic particles. Gravity and Electromagnetic force have infinite range.
Which particle would have the slowest rate of deposition? A.round particle B.very large particle C.particle with sharp ends D.particle with a high density
The particle with sharp ends have the slowest rate of deposition
Answer: Option C
Explanation:
As per aerosol physics, deposition is a process where aerosol particles accumulate or settle on solid surfaces. Thereby, it reduces the concentration of particles in the air. Deposition velocity (rate of deposition) defines from F = vc, where v is deposition rate, F denotes flux density and c refers concentration.
Deposition velocity is slowest for particles of intermediate-sized particles because the frictional force offers resistance to the flow. Density is directly proportional to the deposition rate so clearly shows that high-density particles settle faster. Due to friction, round and large-sized particles deposit faster than oval/flattened sediments.
Answer:
C.particle with sharp ends is the correct answer
Explanation:
particle with sharp ends would have the slowest rate of deposition.
The frictional force which is important that gives resistance to the movement will be higher for irregularly shaped particles and this is the reason sharp ends particles have the slowest rate of deposition.
Deposition happens when the particles settle down on a solid surface.
Density is directly proportional to deposition it means that the particles with high density settle faster and particle with sharp end has lower density so that the reason they have slowest deposition rate.
A car is moving northeast at a velocity of 10 meters per second. Four
seconds later it's going 30 meters per second. What was the car's average
acceleration during this time?
A) 5 m/s
B) 5 m/s²
C) 5 m/s² Northeast
D) 20 m/s² Northeast
The average acceleration of car during this time is 5 [tex]m/s^2[/tex] Northeast.
Answer: Option C
Explanation:
The acceleration exerted by an object is the rate of change in velocity the object undergoes with respect to time. Average acceleration is the measure of variation in acceleration in a given interval of time.
[tex]\text {Average acceleration}=\frac{\text {Final velocity - Initial velocity}}{\text {Time Period}}[/tex]
Here, final velocity is 30 m/s and initial velocity is 10 m/s. The final velocity is attained by the car after 4 s. Thus, the average acceleration will be
[tex]\text {Average acceleration}=\frac{30-10}{4}=\frac{20}{4}=5 \frac{\mathrm{m}}{\mathrm{s}^{2}}[/tex]
So, the average acceleration is 5 [tex]m/s^2[/tex] and as the car was moving in the northeast direction, the average acceleration will also be exerting in the northeast direction only.
What is defined by force per unit area
Answer:
Pressure
Explanation:
Let , us understand by a simple example. Let us apply some force into a needle into a cardboard what we observe , we saw that the needle get into the cardboard.
Now we will apply the same force with a water bottle into the same cardboard , now we noticed that it doesn't get buried into it.
In both examples we noticed that force applied in both the cases is equal but the surface area of the object in which force applied is different.
Here come the term pressure.
Pressure is defined as force applied per unit area.
Therefore , as area increases pressure also decreases . That's why bottle don't get buried but needle go through it.
Force per unit area is defined as pressure, a critical concept in Physics. Measured in pascals (Pa), it refers to how force is distributed over a certain area. The smaller the area, the greater the pressure for a given force.
Explanation:The term force per unit area is defined as pressure. In the field of physics, it is a prominent concept and commonly used in various studies related to fluids, gases, and solids. Pressure is typically measured in pascals (Pa), which is equivalent to a force of one newton per square meter (N/m^2).
An example that can help you understand this concept is pressing your hand against a wall. The force you're applying is spread over the area of your hand that touches the wall. If you use the same force but decrease the contact area by using just a finger, you'll feel more pressure because the same force is now distributed over a smaller area.
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Why is it important to keep the temperature and the amount of water the same when testing surface area?
Answer:
The temperature and the amount of water need to be kept the same so that the only variable that changes is the surface area. If you allow the temperature and/or the amount of water to change too, you will not know which variable is causing the changes that you observe.
Explanation:
During testing surface area, it is important to keep the temperature and the amount of water same so that can can act as control variable.
What is control variable?Anything kept constant or constrained in a research study is referred to as a control variable. Despite not being relevant to the study's objectives, this variable is controlled because it might have an impact on the results.
Variables can be controlled either directly by maintaining their value throughout a study (for example, by maintaining a constant room temperature in an experiment) or indirectly by using techniques like randomization or statistical control (e.g., to account for participant characteristics like age in statistical tests). Research biases like omitted variable bias can be avoided by including control variables in your analysis.
As surface area of water is changeable to the temperature and the amount of water, during testing surface area, it is important to keep them same so that can can act as control variable.
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What is 220 DU in ppm?
Answer:
0.022
Explanation:
Answer:
o.o22
Explanation:
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Which location would allow the least amount of water to be absorbed into the ground ?
1)A grassy terrain
2)A sandy beach
3)A Forest
4)A mountain
4) A Mountain
The rain would run down the slopes faster than be absorbed into the rocky ground.
think about Newton's second law. when designing a rocket ship, what could be adjusted in the design to provide more acceleration?
Answer:Newton's second law is not sufficient to explain rocket's design or requirements it also involves momentum
Explanation:by solving some equations involving newton's second law and momentum we get this Ma=mv M is mass of rocket and m is mass of gases so a=mv/M so as the time passes mass of rocket decreases due to burning of fuel and acceleration a increases
A heavier rocket requires more force to accelerate. Newton's second law, sometimes written as a=F/m, states that the heavier an object, the more force is required to accelerate it.
What is Newton's second law?It implies that the time rate of change of a momentum is equal in magnitude and direction to the force applied to it. A body's momentum is equal to the product of its mass and velocity.
The amount of force produced by a rocket engine is determined by the amount of rocket fuel burned and the rate at which gas escapes the rocket (second law).
The reaction, or motion, of the rocket is equal to and in the opposite direction of the engine's action, or force (third law).
To accelerate, a heavier rocket requires more force. Newton's second law, sometimes written as a=F/m, states that the more force required to accelerate an object, the heavier it is.
Thus, this way, it could be adjusted in the design to provide more acceleration as a greater force will result in a greater acceleration, so a greater force will accelerate a rocket more.
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How do boron-10 and boron-11 differ?
Boron-10 and Boron-11 are isotopes of Boron. They have the same number of protons (5), but Boron-10 has 5 neutrons while Boron-11 has 6 neutrons.
Explanation:Boron-10 and Boron-11 are isotopes of the element Boron, meaning they are the same element but with a different number of neutrons. Boron-10 has 5 protons and 5 neutrons in its nucleus for a total atomic mass of 10. In contrast, boron-11, has 5 protons and 6 neutrons leading to an atomic mass of 11. Both versions of boron are naturally occurring and stable, but boron-11 is slightly more abundant on Earth.
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Boron-10 and boron-11 are isotopes of boron with different masses. The average atomic mass of boron is 10.8 amu.
Explanation:Boron-10 and boron-11 are isotopes of the element boron. Boron-10 has a mass of approximately 10 amu, while boron-11 has a mass of approximately 11 amu. The average atomic mass of boron is 10.8 amu, which is a weighted average of the two isotopes based on their abundance in nature.
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Distinction between eutrophication and artificial eutrophication
Difference between Eutrophication and Artificial Eutrophication
Eutrophication is defined as the process where there is excessive nutrients available in a water medium. There are two types of eutrophication process called as man-made eutrophication or artificial eutrophication and natural eutrophication.
As the name implies natural eutrophication occurs naturally without any external factor. Whereas artifical eutrophication is stimulated by external factor as it is forced by human activity. Eutrophication is imposed artificially so that to maintain a proper state of equilibrium is to reduce water pollution.
Eutrophication refers to the natural process of nutrient enrichment in bodies of water, while artificial eutrophication is the accelerated process caused by human activities.
1) Cause: Eutrophication occurs naturally from sources like sediment erosion and decaying organic matter. Artificial eutrophication is caused by human activities such as agriculture, sewage, and industrial discharges.
2) Rate and Timescale: Eutrophication is a slow, natural process occurring over centuries or longer. Artificial eutrophication is rapid and occurs within a shorter time frame.
3) Nutrient Sources: Eutrophication is driven by natural sources like weathering of rocks and soils. Artificial eutrophication is primarily caused by human sources such as agricultural runoff and sewage discharge.
4) Ecological Impact: Eutrophication can have ecological impacts, but artificial eutrophication often leads to more severe consequences like harmful algal blooms, oxygen depletion, and disruption of aquatic ecosystems.
5) Control and Prevention: Eutrophication is challenging to control as a natural process. Artificial eutrophication can be mitigated by implementing nutrient management practices, wastewater treatment, and land-use regulations.
In summary, eutrophication is the natural process of nutrient enrichment, while artificial eutrophication is the accelerated process caused by human activities, leading to more severe ecological impacts.
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Scientific fact can never change
1)True
2)False
Answer:
True.
Explanation:
A scientific fact is a fact because it has been proven correct, and therefore cannot change.
Answer: 2)False
Explanation:
The scientific fact may include the statement which is based on direct observation of a scientific phenomena, scientific event or scientific process occurring in the natural world. The scientific fact is the output of what scientists believe and understand. The knowledge of scientific fact can change with the passage of time due to implementation of new methodologies, technologies and innovations.
Pllsss help Which of the following is a force acting between objects that do not touch? Normal force
Frictional force Electrical force Applied force
Answer:
Electrical force
Explanation:
Of the options given, the electric force is the only force that acts at a distance, that is, it is not necessary for two objects to be in physical contact for there to be electric force between them (Another example of force acting at a distance is the force of gravity.).
Instead, forces such as the normal force, friction force, and applied force all need contact between objects to take effect.
For example if an object does not touch the surface the normal force is null.
a force of 25 newtons moves a box a distance of 4 meeters in 5 seconds.the work done on the box is ? NM and the power is. ? nm/ s
Answer:
The work done on the box is 100 Nm
The power is 20 Nm/s
Explanation:
There is a force 25 newtons moves a box a distance of 4 meters in
5 seconds
The work done on the box is the product of the force and the distance
that the box moves ⇒ work = force × distance
The force = 25 newtons
the distance = 4 meters
Work = 25 × 4 = 100 NM
The work done on the box is 100 Nm
The force moves the box 4 meters in 5 seconds
The power is the rate of work
The power = work ÷ time
The work = 100 Nm
The time = 5 seconds
The power = 100 ÷ 5 = 20 Nm/s
The power is 20 Nm/s
The work done on the box is 100 Newton Meters and the power used is 20 Newton Meters per second.
Explanation:In Physics, work done is calculated as the 'force' times the 'distance' over which the force is applied. Hence the work done in moving the box would be Work = Force x Distance = 25 Newtons x 4 meters = 100 Newton Meters (or 100 Joules, as 1 Joule = 1 Newton meter).
The 'power' is defined as the rate of doing work or the amount of work done per unit time. Hence the power would be Power = Work / Time = 100 Newton Meters / 5 seconds = 20 Newton Meters per second (or 20 Watts, as 1 Watt = 1 Joule/second).
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the following is the most reasonable weight in units of newtons for an average adult? 120 N 27 N 1000 N 603 N
Answer:
The most reasonable weight for an average adult is 603 A ⇒ last answer
Explanation:
The weight of an adult = gm, where m is the mass and g is the
gravitational acceleration
The gravitational acceleration is approximately 9.8 m/s
We need to find the most reasonable weight in units of newtons for an
average adult
The weight is 120 N
w = mg
120 = m(9.8)
Divide both sides by 9.8
m = 12.24 kg
The weight is 27 N
27 = m(9.8)
Divide both sides by 9.8
m = 2.76 kg
The weight is 1000 N
1000 = m(9.8)
Divide both sides by 9.8
m = 102.1 kg
The weight is 603 N
603 = m(9.8)
Divide both sides by 9.8
m = 61.5 kg
From the all the answers above the most suitable mass of an adult
is 61.5 kg, then the most reasonable weight for an average adult is
603 N
The most reasonable weight for an average adult is 603 A
what is the correct definition of speed.
distance (miles or meters)
time per distance (hours per mile or seconds per meter
distance per time (miles per hour or meters per second)
time (hours or seconds)
Explanation:
Speed is defined as distance per time (miles per hour or meter per second)
Distance per time (miles per hour or meters per second) is the correct definition of speed. Option 3 is correct.
Speed is defined as the distance traveled by an object per unit of time. It represents how fast an object is moving and is typically measured in units such as miles per hour (mph) or meters per second (m/s). The correct definition of speed is "distance per time," meaning it quantifies the rate at which an object covers a certain distance in a given amount of time.
In the context of the provided options:
Option A, "distance (miles or meters)," only provides the distance traveled without considering the time taken, so it doesn't capture the concept of speed.
Option B, "time per distance (hours per mile or seconds per meter)," does not accurately represent speed; it actually represents the inverse of speed, known as the time taken to cover a unit distance.
Option C, "distance per time (miles per hour or meters per second)," is the correct definition of speed, as it directly relates the distance covered to the time taken, providing a measure of how quickly an object moves.
Option D, "time (hours or seconds)," only provides information about time and does not include the concept of distance, which is necessary to define speed.
In summary, the correct definition of speed is the rate of change of distance with respect to time, represented as "distance per time," and it is typically expressed in units like miles per hour or meters per second.
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The gravitational force between two objects is 2400 N. What will be the gravitational force between the objects if the mass of one object is doubled
600N
1200N
4800N
9600N
Answer:
4800N
Explanation:
Lets assume,
Mass of first object = m₁
Mass of second object = m₂
Distance between the two objects = r
Thus the force between the two objects will be
[tex]F = \frac{G\times m_{1}\times m_{2}}{r^{2}}[/tex]
where, G = Universal gravitational constant
Given, F = 2400N
New mass of second object = 2m₂
Now, the force will be
[tex]F_{2} = \frac{G\times m_{1}\times 2m_{2}}{r^{2}}[/tex]
[tex]F_{2}= 2\frac{G\times m_{1}\times m_{2}}{r^{2}}[/tex]
[tex]F_{2}= 2F[/tex]
[tex]F_{2}= 2\times2400[/tex]
Thus, F₂ = 4800N
Based on the graph, during what time period is the race horse moving at the FASTEST speed?
A) 0 to 1 second
B) 0 to 4 seconds
C) 2 to 4 seconds
D) 4 to 6 seconds
the answer is D) 4 to 6 seconds
Answer:the answer is D) 4 to 6 seconds This will help you guys
Explanation: To look at the graph
if a box has a length of 10.0 cm, with a width of 15.0 cm, and a height of 5.0 cm, then what is the volume in m3?
A) 7.5 x 10 ^ -3
B) 750 x 10^2
C) 7.5 x 10^2
D) 7.5 x 10^ -4
The volume of the box is calculated by multiplying the length, width, and height given in centimeters. The volume comes out to 750.0 cm³. This converted to cubic meters (m³) gives us 0.00075 m³ or 7.5 x 10⁻⁴ m³. So the answer is D) 7.5 x 10⁻⁴ m³.
Explanation:To answer your question about the volume of the box given the length, width and height in centimeters, we first need to understand that the volume is the amount of space that a substance or object occupies. In this case, the box.
The formula for volume is Volume= Length × Width × Height. So, we simply need to multiply the given measurements to get the answer in cubic centimeters (since the measurements are given in centimeters).
Let's do the math: Volume = 10.0 cm × 15.0 cm × 5.0 cm = 750.0 cm³.
However, the question asks for the volume in cubic meters (m³). To convert cubic centimeters to cubic meters, we need to know that 1m³ = 1,000,000 cm³. So, we divide our answer by 1,000,000 to get the answer in m³. Hence, 750.0 cm³ ÷ 1,000,000 = 0.00075 m³ or 7.5 x 10⁻⁴ m³. So the correct option is D) 7.5 x 10⁻⁴ m³.
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The volume of the box is given by the multiplication of length, width, and height in cm, then converted to cubic meters. The correct volume in cubic meters is 7.5 x 10^-4 m³.
Explanation:The student wants to calculate the volume of a box given the dimensions in centimeters and receive the result in cubic meters. The formula for the volume of a box (or a rectangular prism) is length x width x height. So first, we calculate the volume using the provided dimensions: 10.0 cm (length) x 15.0 cm (width) x 5.0 cm (height) = 750 cm³. However, to convert this value into cubic meters (m³), we need to know that 1m³ = 1,000,000 cm³. So, we divide 750 cm³ by 1,000,000 to get 0.00075 m³. Representing this number in scientific notation will give us 7.5 x 10^ -4, which corresponds to option D.
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((HURRY PLLSS)) According to Einstein, nothing in the universe can move faster than which approximate speed?
1.0 × 107 m/s
1.0 × 108 m/s
3.0 × 108 m/s
3.0 × 109 m/s
.
Answer:
Woooo more points!!!!!! Also thanks to the dude or dudette who gave the answer hope its correct
Explanation:
UHM OK ....EDIT: THE REAL ANSWER IS 3.0 x 10^8
Edit again: well my answers were different on edge but if ur from edge that’s the answer
According to Einstein, nothing in the universe can move faster than the approximate speed of light in vacuum equal to 3.0 × 10⁸ m/s.
What is speed of light?The speed with which the light ray travels in a medium with negative pressure or in vacuum.
This speed is the greatest speed in the universe. No matter can have speed greater than the speed of light in vacuum.
Thus, nothing in the universe can move faster than which approximate speed 3.0 × 10⁸ m/s.
Learn more about speed of light.
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How do you calculate an object’s mechanical energy?
The formula for mechanical energy is mechanical energy equal to kinetic energy plus potential energy
The calculation of mechanical energy is done via two components of mechanical energy, which are kinetic energy and potential energy.
Explanation:
Kinetic energy is the energy which is required to perform an action. Potential energy is the energy which the body has, just due to the virtue of being capable of doing work. Potential Energy is calculated by,
[tex]U=\boldsymbol{m} \times \boldsymbol{g} \times \boldsymbol{h}[/tex]
Kinetic energy is calculated by, [tex]K .E.=\frac{1}{2} m v^{2}[/tex]
Therefore, Energy=kinetic energy + potential energy
[tex]\text { Energy } E=\frac{1}{2} m v^{2}+m g h[/tex]