Earth is considered an inner planet because it lies between the Sun and the main asteroid belt, along with the other terrestrial planets Mercury, Venus, and Mars.
Explanation:Earth is considered to be an inner planet because it is located between the sun and the main asteroid belt. This asteroid belt is the region of the solar system between the orbits of Mars and Jupiter, where most asteroids are found. Earth, along with Mercury, Venus, and Mars, falls into the category of terrestrial or inner planets, which are closer to the Sun and primarily composed of rock and metal with solid surfaces that have geological features.
Correct answer to the student's question: B- It is located between the sun and the main asteroid belt.
What is the force that can cause two pieces of iron to attract each other?
A.
gravitational force
B.
magnetic force
C.
elastic force
D.
electrostatic force
Answer:
B. Magnetic Force
Explanation:
two pieces of irons cannot attract each other unless at least one of them is magnetize. That force is called magnetism.
A turbine is an example of which of the following?
A.
motor
B.
generator
C.
transformer
D.
magnet
Answer:
B. Generator
Explanation:
A turbine (meaning "turbulence") is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced by a turbine can be used for generating electrical power when combined with a generator So I prefer to go with option B. generator
Answer:
B. Generator (for Plato/Treca)
Explanation:
A turbine spins to create electricity, therefore, making it a generator.
A box weighing 180 newtons is hanging by rope as shown in the figure. Find the tension T2.
A. 81 newtons
B.
171 newtons
C. 130 newtons
OD. 85 newtons
Answer:
B. 171 N
Explanation:
The equation of the forces along the horizontal and vertical directions are:
Horizontal:
[tex]T_2 cos 62^{\circ} = T_1 cos 20^{\circ}[/tex] (1)
Vertical:
[tex]T_1 sin 20^{\circ} + T_2 sin 62^{\circ} = W[/tex] (2)
Where W = 180 N is the weight of the box.
From (1),
[tex]T_2 \frac{cos 62^{\circ}}{cos 20^{\circ}} = T_1 [/tex]
Substituting into (2),
[tex](T_2 \frac{cos 62^{\circ}}{cos 20^{\circ}}) sin 20^{\circ} + T_2 sin 62^{\circ} = W\\T_2 (cos 62^{\circ} tan 20^{\circ}+sin 62^{\circ})=W\\T=\frac{W}{cos 62^{\circ} tan 20^{\circ}+sin 62^{\circ}}=171 N[/tex]
The tension T2 in the rope is equal to the weight of the box, which is 180 Newtons.
Explanation:To find the tension T2, we need to analyze the forces acting on the box. From the figure, we can see that there are two forces acting on the box: the weight of the box, which is 180 Newtons acting vertically downwards, and the tension T2 in the rope. Since the box is in equilibrium, the sum of the forces in the vertical direction must be zero. This means that the tension T2 must be equal to the weight of the box, which is 180 Newtons. Therefore, the correct answer is 180 Newtons.
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- A ship's total weight is equal to the weight of the water it displaces. If you want to calculate the
ship's weight, you must first know
a. the volume of water in the lake or ocean in which the ship is floating.
b. the volume of the entire ship.
c. the volume of the part of the ship that lies below the water's surface.
d. All of the above
Answer:
c. the volume of the part of the ship that lies below the water's surface.
Explanation:
As stated in the problem, Archimedes' Principle tells us that that buoyant force on an object is equal to the weight of fluid it displaces. The volume of water that a ship displaces is the volume it occupies below the surface.
The spectra for elements are _____.
all the same
the same for a chemical family
the same for elements with similar mass
all different and specific to each
Answer:
D) all different and specific to each
Explanation:
I just finished the test.
Which of the following are likely to form a covalent bond?
gold and gold
oxygen and oxygen
magnesium and oxygen
magnesium and gold
At 20 degrees Celsius, conducting wires made of different materials have the same length and the same diameter. Which wire has the least resistance? aluminum gold nichrome tungsten
The wire with the least resistance at 20 degrees Celsius, given the same length and diameter, would be gold due to its lower resistivity compared to aluminium, nichrome and tungsten.
Explanation:The resistance of a wire depends on its material's resistivity, length, and cross-sectional area. In this case, the wires are of the same length and diameter, so the wire with the least resistance would be the one with the lowest resistivity. Comparing the different materials listed, gold, aluminum, nichrome, and tungsten, we find that gold has the lowest resistivity, so it would have the least resistance at 20 degrees Celsius.
It's worth noting this concept with the base of Ohm's law. In general, materials with good conductivity, like gold, copper, and aluminum, are referred to as ohmic materials where the resistance remains essentially the same for a wide range of voltage and current. This is due to the abundant free electrons in these metals that allow for easy flow of electric current thereby reducing resistance.
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When comparing aluminum, gold, nichrome, and tungsten wires of the same length and diameter at 20 degrees Celsius, the gold wire would have the least resistance due to gold's low resistivity.
Explanation:
The ability of a material to resist the flow of electrical current is measured as resistance. In this case, we are comparing the resistance of different types of conducting wires at the same temperature, length, and diameter. From the given options, which include aluminum, gold, nichrome, and tungsten, the wire that would have the least resistance, other factors being equal, would be gold.
The reason for this is that gold, amongst these options, has the lowest resistivity. Resistivity is the property of a material that determines the resistance of a wire made from that material. It basically measures how strongly the material opposes the flow of electric current.
In the case of gold, it is one of the most conductive materials known, meaning it has very low resistivity, and therefore a gold wire would have lower resistance than wires made from the other materials listed. While silver actually has the highest conductivity and lowest resistivity of any metal, it is not one of the options presented in this question.
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plz.. help me this out I am from nepal actually it is math
Answer:
tan (x eˣ) + C
Explanation:
∫ (eˣ + x eˣ) / (cos² (x eˣ)) dx
First, use u-substitution.
u = x eˣ
du = (eˣ + x eˣ) dx
∫ 1 / (cos² u) du
∫ sec² u du
tan u + C
Substitute back:
tan (x eˣ) + C
Driving to work one morning, you get a flat tire. When using the car jack, you apply 120 N of force to the jack and the jack in turn applies 2000 N of force to lift the car up. What is the mechanical advantage of the jack?
Explanation:
Mechanical advantage is the ratio of output force to input force.
MA = 2000 N / 120 N
MA = 16.67
Round as needed.
Answer:MA = 2000 N / 120 N
MA = 16.67
Explanation:
If a person weighs 90 N on Earth, and the gravitational acceleration due to Jupiter's gravity is 25.98 m/s2, how much would the person weigh on Jupiter?
A. 3.46 N
B. 238.59 N
C. 882.00 N
D. 2338.20 N
Answer:
B. 238.59 N
Explanation:
First, use their weight on Earth to find their mass:
W = mg
90 N = m (9.8 m/s²)
m = 9.18 kg
Now use this mass to find the new weight on Jupiter.
W = mg
W = (9.18 kg) (25.98 m/s²)
W = 238.59 N
If the change in velocity increases, what happens to the acceleration during the same time period?
Acceleration decreases.
O Acceleration increases
Acceleration becomes negative.
O Acceleration becomes steady
Fast plz and it’s not becomes steady
Answer:
B
Explanation:
Took on Edge 2022
Which factors can most directly affect the motion of a spring? Check all that apply. the color of the spring the stiffness of the spring the mass of the spring itself the force applied to the spring the distance the spring is stretched
Answer:
-THE STIFFNESS OF THE SPRING
-THE FORCE APPLIED TO THE SPRING
-THE DISTANCE THE SPRING IS STRETCHED
Explanation:
Spring stiffness applied force, and stretched distance can most directly affect the motion of a spring.
What is spring force?The force required to extend or compress a spring by some distance scales linearly with respect to that distance is known as the spring force.
Its formula is
F = kx
The factors can most directly affect the motion of a spring:
The stiffness of the spring.
The forces applied to the spring.
The distances the spring is stretched.
Hence, spring stiffness applied force, and stretched distance can most directly affect the motion of a spring.
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A cannonball is fired on flat ground
at 420 m/s at a 53.0° angle. What
maximum height does it reach?
hmax = 5740.48 m. The maximum height that a cannonball fired at 420 m/s at a 53.0° angles is 5740.48m.
This is an example of parabolic launch. A cannonball is fired on flat ground at 420 m/s at a 53.0° angle and we have to calculate the maximum height that it reach.
V₀ = 420m/s and θ₀ = 53.0°
So, when the cannonball is fired it has horizontal and vertical components:
V₀ₓ = V₀ cos θ₀ = (420m/s)(cos 53°) = 252.76 m/s
V₀y = V₀ cos θ₀ = (420m/s)(cos 53°) = 335.43m/s
When the cannoball reach the maximum height the vertical velocity component is zero, that happens in a tₐ time:
Vy = V₀y - g tₐ = 0
tₐ = V₀y/g
tₐ = (335.43m/s)/(9.8m/s²) = 34.23s
Then, the maximum height is reached in the instant tₐ = 34.23s:
h = V₀y tₐ - 1/2g tₐ²
hmax = (335.43m/s)(34.23s)-1/2(9.8m/s²)(34.23s)²
hmax = 11481.77m - 5741.29m
hmax = 5740.48m
Answer:
5740.48
Explanation:
Which waves can travel only through solids?
Answer:
S- waves
Explanation:
S- waves are known as secondary waves or shear waves. They only propagate through solid medium only.
S- waves are elastic seismic waves that propagates transversely moving materials perpendicularly along their direction. In the process, they cause shearing. Only solids have enough shear strength to withstand the movement of s-waves without getting altered. Liquids and gases cannot shear and would not allow s-waves to propagate through them.
If the wavelength of orange light is 6 · 10-7 m, calculate its frequency. f = _______ Hz
Answer:
Frequency of orange light = [tex]5 \times 10^{14}[/tex] Hz
Explanation:
We are given the wavelength of the orange light and we are to find the value of its frequency.
Wavelength of orange light = [tex]6.0 \times 10^{-7} m[/tex]
We know that:
Speed of light = Frequency of orange light × Wavelength of orange light
Substituting the values in the above formula:
[tex]3 \times 10^8[/tex] = Frequency of orange light × [tex]6.0\times10^{-7}[/tex]
Frequency of orange light = [tex]\frac{3 \times 10^8}{6\times10^{-7}} =5 \times 10^{14}[/tex] Hz
1.0. A body has a moss 5 kg, what does it mean? How
is mass of a body measured? Define one second
Answer:Kg is the unit of mass. So a 5kg object has a mass of 5kg. The weight you associate with it is only relevant on Earth (under its specific gravity) and in fact really the kilogram-force measurement which is measured in Newtons (5kg x 9.8m/s2 = 49.2N). ... Commonly, it means the object weighs 5kg
Explanation:
This is not my answer
Final answer:
A body with a mass of 5 kg contains an amount of matter equivalent to 5 kilograms. Mass is a measure of the amount of matter and inertia in an object, measured in kilograms using a balance. One second is the time duration of over 9 billion periods of the radiation of the cesium-133 atom.
Explanation:
Understanding Mass and Its Measurement
When a body has a mass of 5 kg, it means that the body contains matter equivalent to 5 kilograms. Mass is a property of an object that quantifies its amount of matter and its inertia. Inertia is the object's tendency to maintain its state of motion. The mass does not change regardless of the location because it is independent of external forces like gravity. In contrast, weight is the force on a body due to gravity and can vary with the change of gravity in different locations.
Mass is measured using a balance that compares the object to a standard mass, such as a known weight or the International Prototype Kilogram, which is a cylinder made of a platinum-iridium alloy kept at the International Bureau of Weights and Measures in France. The standard unit of mass in the International System of Units (SI) is the kilogram (kg).
Definition of One Second
One second is the duration of 9,192,631,770 periods of radiation corresponding to the transition between two hyperfine levels of the ground state of the cesium-133 atom at 0 kelvin. It is a unit of time in the International System of Units (SI).
Select the correct answer. In a given chemical reaction, the energy of the products is less than the energy of the reactants. Which statement is true for this chemical reaction? A. Energy is absorbed in the reaction. B. Energy is released in the reaction. C. There is no transfer of energy in the reaction. D. Energy is lost in the reaction.
Answer:
D
Explanation:
If in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. In an endothermic reaction, the products have more stored chemical energy than the reactants. And in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.
Answer:
B
Explanation:
In science, it is understood that energy cannot be created, nor destroyed, it can only change form. Hence, certain reactions require a lot of energy, since their products have a higher energy than their reactants, or they release energy because their products have less energy than their reactants.
A: Is incorrect, because a reaction will not absorb energy if the products have less energy than the reactants.
B: Is correct, because in a reaction where the products have less energy, there will be a release of energy into the environment (usually heat).
C: Is incorrect, because there is always a transfer of energy in a chemical reaction.
D: Is incorrect, because energy cannot be "lost". It may be released into the environment, but it cannot be lost.
As the distance between two charged objects increases, the strength of the electrical force between the objects
varies
remains the same.
increases.
decreases.
) Intro
Done
OOOOOOOO
9 of 10
As the distance between two charged objects increases, the strength of the electrical force between the objects decreases.
Answer: Decreases
Explanation:
got it right on the assignment. Hope this helps peeps! :]
Affirmations and strokes relate to the power of adult
What happens to energy “lost” during an energy transformation?
Energy loss. Figure 1. Energy losses in an incandescent light bulb are very large; most of the input energy is lost in the form of heat energy. When energy is transformed from one form to another, or moved from one place to another, or from one system to another there is some energy loss.
There is some energy loss when it is changed from one form to another, and relocated from one location to another.
What is energy?Energy is a quantifiable quality that may be transferred to a body or a physical system and is noticeable when labor is done as well as when heat and light are produced.
An incandescent light bulb has significant energy losses; the majority of the input energy is dissipated as heat energy. There is some energy loss when it is changed from one form to another, relocated from one location to another, or moved from one system to another.
There is some energy loss when it is changed from one form to another, relocated from one location to another, or moved from one system to another. This implies that some of the incoming energy is transformed into a highly disordered form of energy, such as heat, when energy is transformed into a new form.
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Hi, I'm having a lot of trouble with this one. The answer I got to was 407.91 but I'm not confident in it.
Answer:
6.20×10⁴ V/m
Explanation:
The magnitude of electric field is:
E = √(Eₓ² + Eᵧ²)
where Eₓ = ∂φ/∂x and Eᵧ = ∂φ/∂y.
φ = 1.11 (x² + y²)^-½ − 429x
Eₓ = -0.555 (x² + y²)^-(³/₂) (2x) − 429
Eᵧ = -0.555 (x² + y²)^-(³/₂) (2y)
Evaluating at (0.003, 0.003):
Eₓ = -44034 V/m
Eᵧ = -43605 V/m
The magnitude is:
E = 61971 V/m
Rounded to three significant figures, the strength of the electric field is 6.20×10⁴ V/m.
Is mechanical energy conserved as a playground swing moves? Why or why not?
Answer:NO
Explanation:
No, because as it swings it is mechanical energy that changes from almost completely potential energy to almost completely kinetic energy and thermal and sound.
an electric clothes dryer has a resictance of 16 Ohms it drawes 15 A of current what is the voltage in volts of the wall outlet that it is pluged into
Answer:
V=240 volts
Explanation:
V=IR
V=15*16
Cleaning tarnished silver is an example for which of the following.
chemical change
chemical property
physical change
physical property
I believe chemical change is the correct answer.
Silver is a chemical so it certainly will not deal with physical change or physical property.
It cannot be a property since it consists of only one element which is silver.
Cleaning tarnished silver is an example of chemical change, therefore the correct answer is option A.
What is a chemical reaction?A chemical reaction is a process in which one or more substances, also known as reactants are converted to one or more different substances, known as products.
A chemical bonding between a metal and a nonmetal molecule, often oxygen and sulfur dioxide, results in a tarnish.
The result of a chemical interaction between a metal and a non-metal substance like oxygen or sulfur oxides is a tarnish.
Since polishing tarnished silver is an example of a chemical change, option A is the appropriate response.
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QUESTION 6
The number of strawberries on a strawberry plant and the amount of water the plant recieves have a direct relationship. The the amount of water the plant receives increases, how will the number of strawberries on the plant change?
Decrease
Increase
No change
Increase and decrease in a regular pattern
Answer:
Increase. As the water increases, so will the strawberries if watered evenly throughout
Which term best describes the phrase "the best explanation that science has
to offer"?
A. Theory
B. Law
C. Experiment
D. Observation
The term 'Theory' best describes the phrase as it refers to a well-substantiated explanation of some aspect of the natural world, that has been repeatedly tested and confirmed through the scientific method.
Explanation:The term that best describes the phrase 'the best explanation that science has to offer' is Theory. In scientific terms, a 'theory' is more than just a guess. It is a well-substantiated explanation of some aspect of the natural world that is acquired through the scientific method, and repeatedly tested and confirmed through observation and experimentation.
Laws are generally observed patterns that apply universally. Experiments are practical procedures undertaken to derive or validate a fact, and Observation is the act of gathering and analyzing data. These are all integral components of scientific investigation, but the term 'theory' is the one that aligns most closely with 'the best explanation'.
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The maximum speed of a 4.1 kg mass attached to spring is 0.78 m/s and the maximum force exerted on the mass is 13 N.
(a) what is the amplitude of motion for this mass?
(b) what is the force constant of the spring?
(c) What is the frequency of this system?
Start with the conservation of energy. The spring potential energy and the mass' kinetic energy will fluctuate over time, but their sum will stay constant. The maximum spring potential energy equals the maximum kinetic energy.
0.5mv² = 0.5kx²
m is the mass, v is the maximum velocity, k is the spring constant, and x is the maximum displacement along the spring.
Given values:
m = 4.1kg
v = 0.78m/s
Calculate the maximum kinetic energy.
Max KE = 0.5mv² = 1.247J
Set this equal to the maximum spring potential energy.
Max spring PE = 0.5kx² = 1.247J
x² = 2.494/k
The spring force is F = kx
Max F = kx = 13N
x = 13/k
x² = 169/k²
Set both values of x² equal to each other and solve for k the spring constant:
2.494/k = 169/k²
2.494k = 169
k = 67.8N/m
Use k to find x:
Max F = kx = 13N
67.8x = 13
x = 0.192m
The frequency of the system is given by:
f = (1/(2π))√(k/m)
f is the frequency, k is the spring constant, m is the mass.
f = (1/(2π))√(67.8/4.1)
f = 0.647Hz
The amplitude is the maximum distance from the mean position. The amplitude for the motion for the given mass is 2.658 m.
From the formula of Maximum velocity :
[tex]V_{max } = 2\pi fA[/tex]
For Amplitude:
[tex]A = \dfrac { V_{max}}{2\pi f} [/tex]
Where,
[tex]V_{max } [/tex] - maximum velocity of the mass = 0.78 m/s
[tex]f[/tex] - force exerted on the object = 13 N
[tex]A[/tex]- amplitude = ?
Put the values in the formula and solve it for [tex]A[/tex],
[tex]A = \dfrac {13 }{2\pi \times 0.78 } \\\\ A = \dfrac {13}{4.89}\\\\ A = 2.658[/tex]
Therefore, the amplitude for the motion for the given mass is 2.658 m.
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What is the relationship between amplitude and volume?
Answer:
Explanation:
The sound moves in the form of waves. The amplitude is the distance between the highest and the lowest point of a wave. In this way the amplitude indicates the amount of energy that a sound signal contains.
Intensity is the amount of acoustic energy that a sound contains. Intensity is measured in decibels. Volume is a measure of the energy that a signal carries, being a magnitude of intensity.
In this way it is possible to say that the energy of a signal is closely related to its amplitude, but its development over time is also important.
The tone or height is the quality that distinguishes between a high or low sound and a low or high sound.
Which compound is an unsaturated hydrocarbon?
cyclobutane
isopropane
ethyne
pentane
Answer:
i believe it is isopropane. sorry if this isnt helpful, but i believe thats correct
Explanation:
Answer:
Ethyne
Explanation:
gradpoint
Which substance has the highest specific heat? A. Soil B. Mud C. Sand D. Water
The substance with the highest specific heat is water. The correct option is D
Which substance has the highest specific heat?Water has a specific heat capacity of about 4.186 joules per gram per degree Celsius (J/g°C), which is significantly higher than most other substances. This means that it requires a large amount of heat energy to raise its temperature by a given amount compared to other materials like soil, mud, or sand.
Due to its high specific heat, water can absorb and store a substantial amount of heat during the day and release it slowly at night, moderating temperature changes in the surrounding environment. This property is essential for maintaining stable climates in various ecosystems and has a significant impact on Earth's weather patterns. In conclusion, water's high specific heat makes it a crucial factor in regulating the planet's temperature and climate.
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