Match each fossil fuel with its common use.

1. Gasoline

2. Electricity

3. Heating homes

-Coal

-Natural gas

-Gas

Answer:

c Gram

Explanation:

Mass is an intrinsec property of every object; it is somehow a measure of the "amount of matter" contained in the object.

The SI units of the mass is the kilogram (kg), where one of the sub-multiple of the kilogram is the gram (g). For measuring small objects, therefore, the gram is the appropriate unit.

The other units are wrong because:

- The meter is the unit of measure of the length

- The liter is a unit of measure for the volume

- Newton is the unit of measure for the force

Answer: A. a study of different surfaces to compare luster or shine

Explanation:

A qualitative data can be define as the data that can only be observed and recorded but it cannot be counted in numbers. This type of data cannot be measured in units. For example, color.

A is the correct option. This is because of the fact that luster and shine can only be observed it cannot be measured in units and counted in numbers. It just represents the physical observable property of a material.

The velocity vector of a rising tennis ball is directed upward, while the acceleration vector is directed downward due to gravity slowing the ball down as it reaches its peak.

The velocity and acceleration vectors of a tennis ball that is rising upward towards its highest point in its motion can be defined by first understanding that acceleration is a vector in the same direction as the change in velocity. As the tennis ball is moving upwards, its velocity vector is directed upward. However, understanding that acceleration is the rate of change of velocity, the acceleration vector is directed downward because the ball is slowing down as it reaches its highest point, hence the gravity is acting downwards causing its speed to decrease. Therefore, the correct answer is d. Both A & C.

https://brainly.com/question/40191699

#SPJ12

In the case of a tennis ball rising towards its peak, the velocity vector points upward while the acceleration vector due to gravity, points downward.

When a tennis ball is rising towards its highest point above the ground, the velocity vector is directed upward because the ball is moving in an upward direction. Thus, the answer 'A' is correct. However, the acceleration vector is directed downward, as the downward force of gravity is acting on the ball at all times, causing a constant acceleration downward, even when the ball is moving upward. Thus, the answer 'C' is also correct. Therefore, in this scenario, for both 'A' and 'C', the velocity vector is directed upward and acceleration is directed downward, true.

https://brainly.com/question/14683118

#SPJ12

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.

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.

https://brainly.com/question/394103

#SPJ2

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

Elements with few valence electrons are found in the alkali metals (group 1) and alkaline earth metals (group 2) on the left side of the periodic table. They tend to lose electrons to form positively charged ions and have one or two valence electrons respectively.

Elements with few valence electrons are found on the left side of the periodic table. Specifically, the alkali metals in group 1 each have only one valence electron, while the alkaline earth metals in group 2 each have two valence electrons. As you move from left to right across a period, the number of valence electrons increases until you reach the noble gases, which have full valence shells and are highly stable and non-reactive.

Valence electrons are the electrons in the outermost shell, and they play a key role in determining an element's chemical properties. These electrons can either be lost, gained, or shared to achieve a full valence shell, mimicking the electron configuration of the nearest noble gas. This behavioral pattern results in the formation of either positively charged ions when electrons are lost or covalently bonded structures when electrons are shared.

Answer:

The person is further from the origin then they where originally.

Explanation

The person starts with a negative displacement from the origin. They then move with a negative velocity, this means that they are walking away from the origin in the negative direction. This means that the displacement will end up a larger negative number than before, thus they are further away from the origin.

Answer:

Then the note is below the tune it should be in.

If a trumpet or a flute is flat, the pipe needs to be shortened in order to increase the pitch of the sound.

Explanation:

Trumpet or flute, a musical equipment that usually  works on sound waves concept. It works like an empty pipe with several holes. When blowing air, longitudinal sound waves get generated by different wave frequencies.

If we reduce the length of the pipe; this causes a higher frequency in the pipe. Longer tubes produce low-frequency sound waves that produce deep sound. Therefore, the length of the flute or trumpet should be shortened when it is flat.

Answer:

10.2N

Explanation:

Given spring constant k =8.5N and and elastic limit e =1.2m

using the relation F=ke (hookes law)

law stating that the strain in a solid is proportional to the applied stress within the elastic limit of that solid.

substituting the values into the equation, it becomes F=8.5N ×1.2m.

= 10.2N/m ~~ 10.2N as final answer.

The force needed to stretch a spring 1.2m, if the spring constant is 8.5N/m is calculated to be 10.2 newtons.

The amount of force needed to stretch a spring can be calculated using Hooke's Law, which states that the force required to stretch or compress a spring by some distance (x) is directly proportional to that distance.

The formula for Hooke's Law is F = kx, where F is the force in newtons, k is the spring constant in newtons per meter (N/m), and x is the distance in meters.

F = kx

F = 8.5 N/m × 1.2m

= 10.2 N.

Answer:

Shorter the wavelength, the higher the frequency of the electromagnetic wave, and greater is the energy of the waveform or the photon. Frequency is always inversely related to the wavelength.

Explanation:

it is on google

Answer:

Shorter frequency mean the sounds lower but this doesn't mean smaller the the answer is greater or stronger

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.

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.

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.

https://brainly.com/question/29476563

#SPJ3

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]

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.  

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.

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.

https://brainly.com/question/35874068

#SPJ6

Answer:

Answer C : The object's momentum will greatly increase

Explanation:

Recall that force and linear momentum are closely related by the equation:

[tex]F = \frac{MomentumChange}{time}[/tex]

Both, Momentum Change and Force (F) are in the numerator of on either side of the equation, so they are in direct proportionality. A large force (force greatly increased) will be the reflection of a large change in momentum.

Answer:

The object’s momentum will greatly increase if the net force acting on the object is greatly increased. So option C is the best statement which describes the change in object momentum.

Explanation:

So as the force is directly proportional to momentum and it is obtained by performing the first order derivation of momentum, the variation in force and momentum will have to be same.

[tex]F = \frac{MomentumChange}{time}[/tex]

The force being the derivative of momentum indicates that if the net force acting on object is greatly increased means the momentum will also be undergoing great increase as the acceleration of the object will also be increased greatly due to increase of force.

Answer:

It is a closed circuit.

Using the kinematic equation v = u + at, the man's new velocity is found to be 9.5 m/s after accelerating at 3 m/s² for 2.5 seconds.

To calculate the new velocity of the man after accelerating, we apply the basic kinematics equation v = u + at, where:

Given that the man's initial velocity (u) is 2 m/s, acceleration (a) is 3 m/s², and the time (t) is 2.5 seconds, we substitute these values into the equation:

v = 2 m/s + (3 m/s²)(2.5 s)

This yields:

v = 2 m/s + 7.5 m/s

The new velocity of the man is:

v = 9.5 m/s

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.

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.

https://brainly.com/question/27475737

#SPJ6

Boron-10 and boron-11 are isotopes of boron with different masses. The average atomic mass of boron is 10.8 amu.

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.

https://brainly.com/question/6283234

#SPJ6

Answer: [tex]26\ \frac{m}{s}[/tex]

Explanation:

His new velocity is the "Final velocity". In order to calculate it, you need to use the following formula:

[tex]V_f=V_0+at[/tex]

Where [tex]V_f[/tex] is the Final velocity, [tex]V_0[/tex] is the Initial velocity, [tex]a[/tex] is the acceleration and [tex]t[/tex] is the time.

Based on the information provided in the exercise, you can identify that:

[tex]V_0=18\ \frac{m}{s}\\\\a=4\ \frac{m}{s^2}\\\\t=2\ s[/tex]

Therefore, you can substitute values into the formula:

[tex]V_f=18\ \frac{m}{s}+(4\ \frac{m}{s^2})(2\ s)\\\\V_f=26\ \frac{m}{s}[/tex]

Then, his new velocity is [tex]26\ \frac{m}{s}[/tex]

Answer:

i think the answer to this is D

Answer:

Turn it to a smaller face.

(D) is correct option.

Explanation:

Pressure :

Pressure is the inversely proportional to the area.

When the area of the block of face small then the pressure will be increases if the area of the block of face larger then the pressure will be reduce.

Pressure is equal to the force upon area.

In mathematically term,

[tex]P=\dfrac{F}{A}[/tex]

Where, F = force

A = area

P = pressure

Hence, Turn it to a smaller face.

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.

Answer: 0.03 Hz

Explanation:

The frequency [tex]f[/tex] of a light with a wavelength [tex]\lambda=1(10)^{10} m[/tex] is calculated by the following equation:

[tex]f=\frac{c}{\lambda}[/tex]

Where [tex]c=3(10)^{8}m/s[/tex] is the speed of light

Then:

[tex]f=\frac{3(10)^{8}m/s}{1(10)^{10} m}[/tex]

[tex]f=0.03 s^{-1}=0.03 Hz[/tex] This is the frequency

Answer:

10m/s to the right

Answer: 10 m/s to the right

Explanation: Velocity is both speed AND Direction.

To find the launch speed and the time the frog spends in the air, we can use the equations of projectile motion. The launch speed is approximately 4.4 m/s, and the time the frog spends in the air is approximately 0.63 s.

To find the launch speed and the time the frog spends in the air, we can use the equations of projectile motion. Since the frog jumps at a launch angle of 45° and a distance of 2.2 meters, we can use the range equation to find the launch speed:

R = ((V^2) * sin(2θ)) / g

Substituting the given values:

2.2 = ((V^2) * sin(90°)) / 9.8

Simplifying the equation:

(V^2) * sin(90°) = 2.2 * 9.8

V = √((2.2 * 9.8) / sin(90°))

V ≈ 4.4 m/s

To find the time the frog spends in the air, we can use the following equation:

t = (2 * V * sin(θ)) / g

Substituting the given values:

t = (2 * 4.4 * sin(45°)) / 9.8

Simplifying the equation:

t ≈ 0.63 s

https://brainly.com/question/29545516

#SPJ12

The frog's launch speed and time spent in the air can be calculated using principles of projectile motion. The frog's launch speed is approximately 4.8 m/s, and it spends about 0.7 seconds in the air.

To answer your query, we first need to apply some principles of projectile motion, specifically the equations of motion along the x-axis (horizontal) and y-axis (vertical).

For the first part of the question, we need to determine the frog's launch speed. We use the formula for the range of a projectile, given as R = (v^2 * sin(2*θ)) / g, where R is the maximum horizontal distance (2.2 m), θ is the launch angle (45°), g is the gravitational acceleration (approximately 9.8 m/s²), and v is the initial velocity which we're trying to find out. From this, we can calculate the frog's launch speed as approximately 4.8 m/s.

The second part of the question asks for the time the frog spends in the air. This duration is known as the time of flight. To calculate this, we can use the formula t = (2*v*sin(θ)) / g. Substituting the known values into this equation, we get the time spent in the air as approximately 0.7 seconds.

https://brainly.com/question/29545516

#SPJ12

Answer: 1 kilometer = 1,000 meters

Explanation:

The decimal metric system is the predecessor of the International System of Units (SI) and consists of a system in which the multiples and submultiples of the unit of measure are related to each other by multiples or submultiples of ten (10).

It should be noted that this system was created to be neutral and that it could be easily used, understood and adopted by all countries. However, so far only the United States, Myanmar (Burma) and Liberia have retained their traditional units of measurement instead of the Decimal Metric System, which was then replaced by the current SI.

In this sense, two main basic units of this system are the meter (to measure length) and the gram (to measure mass). In the specific case of the meter there are submultiples of the same nature that follow a decimal scale, for example:

[tex]1km = 10^{3} m = 1000m[/tex]

Therefore, among the given options, the one that fulfills the explained conditions is 1 kilometer = 1,000 meters

The other options do not follow a decimal system.

Final answer:

The decimal system of measurement is represented by the option '1 kilometer = 1,000 meters' because it follows the base ten structure of the metric system, where conversions are based on powers of ten.

Explanation:

The decimal system of measurement is exemplified by the base ten structure, which is integral to the SI or metric system. Of the options provided, 1 kilometer = 1,000 meters represents a decimal system of measurement, as it’s based on a multiple of ten, specifically 103 or one thousand. This system is characterized by the ease of conversion among different units of measurement using powers of ten. In comparison, other measurements listed, such as quarts to fluid ounces, miles to feet, and pounds to ounces, are based on the English system, which uses different conversion factors that are not consistently multiples of ten.

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.

Radial fractures tend to occur first when a pane of glass is struck.

Answer: Option A

Explanation:

There is a slight difference between radial and concentric fractures and as radial fractures are formed which extends outwards in a radial manner  from the point where the glass is struck.

Whereas concentric fractures are circular in pattern and they terminate long before radial crack. Also when a bullet is fired from a gun, a similar reaction is observed as it gets struck on the surface and fractures are formed in the same pattern.

The Anwer is: A Radical Fractures

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.

Final answer:

Carbon monoxide's chemical formula is CO; it's a toxic gas formed by the incomplete combustion of carbon-containing materials and can react with oxygen to form carbon dioxide (CO₂).

Explanation:

The student is asking about the chemical formula for carbon monoxide, which is CO. This compound is composed of one carbon atom covalently bonded to one oxygen atom. Carbon monoxide is a colorless and very toxic gas with no smell, and its boiling point is -190 °C. It is produced through the incomplete combustion of carbon-containing materials. An increased concentration of this gas in the air can be hazardous to health, as it can bind with hemoglobin in blood, preventing proper oxygen transport.

Additionally, in terms of chemical reactions, carbon monoxide can react further with oxygen to form carbon dioxide (CO₂), which is a gas with the structural formula O=C=O, indicating that the carbon atom forms two double covalent bonds with the oxygen atoms. Carbon dioxide is a common greenhouse gas in Earth's atmosphere.