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2 years ago

There is no air resistance on the moon, so when Neil Armstrong dropped a

Physics

1 answer:

Alborosie2 years ago

3 0

Answer: faster

Explanation:

Given

hammer is dropped from a height of 12 ft on the surface of the moon

Here, the potential energy is converted into kinetic energy

$\Rightarrow mgh=\dfrac{1}{2}mv^2\\\\\Rightarrow v=\sqrt{2gh}$

That is velocity is a function of the square root of height. The more the height, greater is the velocity.

So, the hammer hits the ground faster .

You might be interested in

The symbol used for magnetic field is:

alina1380 [7]

The letter "B" is used for magnetic field

5 0

3 years ago

Write the resistivity of gold, iron ,Mercury, silver,copper? which is bad conductor?

Tamiku [17]

Answer:

Mercury is a bad conductor of heat but a fair conductor of electricity

By the way PURE SILVER is the best conductor of electricity

Please Mark as brainliest

3 0

2 years ago

Use Newton’s Universal Law of Gravitation to calculate the magnitude of the gravitational force between a 200 kg refrigerator an

expeople1 [14]

Answer:

3.735×10⁻⁶ N

Explanation:

From newton' s law of universal gravitation,

F = Gmm'/r² .............................. Equation 1

Where F = Gravitational force between the person and the refrigerator, m = mass of the person, m' = mass of the refrigerator, r = distance between the person and the refrigerator. G = gravitational universal constant.

Given: m = 70 kg, m' = 200 kg, r = 0.5 m

Constant: G = 6.67×10⁻¹¹ Nm²/kg².

F = (6.67×10⁻¹¹×70×200)/0.5²

F = 93380×10⁻¹¹/0.25

F = 373520×10⁻¹¹

F = 3.735×10⁻⁶ N

Hence the force between the person and the refrigerator = 3.735×10⁻⁶ N

6 0

3 years ago

What is used to block the UV light during screen development process to create a stencil in the emulsion

coldgirl [10]

Answer:

Invisible UV energy reacts with emulsion sensitizer and hardens the stencil so it won't dissolve with water and rinse down the drain

Explanation:

4 0

2 years ago

Match the following:

joja [24]

Explanation:

1. study of conversion of heat to mechanics → thermodynamics

A branch of physical science which deals with heat and other forms of energy.

2. The Law of Conservation of Energy → first Law of Thermodynamics

Energy cannot be created nor be destroyed. According to first law of thermodynamics total energy of the system is always constant.

3. Result of applied energy → work

Work is the way of system to release its energy.

4. Principle that states that in any energy transformation some energy is dissipated as heat → Second Law of Thermodynamics

5. energy of motion → kinetic energy

Kinetic energy is defined as energy possessed by the body due to its motion.

6. work/displacement → force

Work is product of force and displacement.

$Work=Force \times displacement$

$Force=\frac{Work}{displacement}$

7. power · time → energy

Power is defined energy per unit time.

$Power=\frac{Energy}{Time}$

$Energy=Power\times Time$

8. Device that transforms heat energy into mechanical energy → heat engine

heat engine is a device which converts the heat energy which is released due to combustion of fuel into a useful work that is mechanical energy.

9 . Energy due to position → potential energy

Potential energy is defined as energy possessed by the body due to its position.

10. efficiency of a heat engine unit of heat → calorie

11. Measure of molecular motion → Temperature

Kinetic energy is directly proportional to temperature.

Greater the motion more will be the kinetic energy and with more will be the temperature.

12. Heat given off by a liquid with no change in temperature → latent heat of fusion

Latent heat of fusion is defined as heat released by 1 mole of substance when it under goes phase change that is from solid to liquid.

13. Motion within solids → vibrational motion

Vibrational motion is the motion in which particle oscillates from its mean position.

14. Phase of matter on the sun → plasma

Plasma is hot ionized gas with equal number of positive and negative ions. Due to high temperature of sun most the gas are in the plasma state.

8 0

3 years ago