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levacccp [35]
3 years ago
15

On the moon, the acceleration of gravity is 1.6 m/s2. If an object has a

Physics
1 answer:
Amanda [17]3 years ago
4 0

Answer:

5.1 kg

Explanation:

Its mass on the moon is 5.1 kg because mass is an intrinsic property of a material and does not change with location. Although, its weight might vary because its acceleration of gravity g is dependent on the mass M and radius r of the planet(in this case, moon) involved g = GM/r². Since weight W = mg is dependent o g, weight varies but mass remains constant.

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A rectangular solid made of carbon has sides of lengths 1.0 cm, 2.0 cm, and 4.0 cm, lying along the x, y, and z axes, respective
sammy [17]

Answer:

The correct answer is in the x-axis direction, where the distance travelled is 1.0 cm and the surface is 8 cm^{2}.

Explanation:

The electrical resistance is lower when the contact surface is larger and the length is shorter.

An electrical resistance is an opposition to the flow of electric current through a conductor. For a given conductor, the resistance is given by the following formula:

R = ρ * \frac{l}{S}

Where:

R: Electrical resistance.

ρ: Resistivity of the material.

l: Length.

S: Surface of the conductor.

Thus, the direction in which the electrical resistance is lower is when the distance is minimum and the area is greater.

Have a nice day!

8 0
3 years ago
How is energy transformation related to molecular activity.
rodikova [14]

Explanation:

  1. The law of conservation of energy states that when one form of energy is transformed to another, no energy is destroyed in the process. According to the law of conservation of energy, energy cannot be created or destroyed. So the total amount of energy is the same before and after any transformation.
6 0
1 year ago
Does visible light make up a relatively large part or a relatively small part of the electromagnetic spectrum?
Yakvenalex [24]

Answer:

Relatively small part of the electromagnetic spectrum

Explanation:

Let us take a look at the electromagnetic spectrum

Radio waves

Wavelength = 10^3\ m

Microwaves

Wavelength = 10^{-2}\ m

Infrared waves

Wavelength = 10^{-5}\ m

Visible waves

Wavelength = 0.5\times 10^{-6}\ m

Radio waves

Wavelength = 10^3\ m

Ultraviolet waves

Wavelength = 10^{-8}\ m

X ray waves

Wavelength = 10^{-10}\ m

Gamma ray waves

Wavelength = 10^{-12}\ m

So, it can be seen that the visible light makes up a relatively small part of the electromagnetic spectrum.

8 0
3 years ago
Undersoil electrical heating systems are used in greenhouses. This system could also be
Nata [24]

Answer:t

Explanation:

Given that,

Power output is

P = 0.50kW = 0.5 × 1000 = 500W.

We want to find energy transfer in

t = 2minutes = 2 × 60 = 120 seconds

Also, time to hour

t = 2/60 = 1/30 hour

Power is the rate of energy.

Therefore,

Power = energy / time taken

Energy = power × time taken

Energy = 0.5kW × 1/30 hr

Energy = 0.01667 kWh

Also, energy in Joule

Energy = power × time

Energy = 500W × 120s

Energy = 60,000J

Energy = 60kJ.

4 0
3 years ago
how much heat is needed to melt 2.5 kg of lead? The latent heat of fusion for lead is 5.85 Kcal/kg. The latent heat of vaporizat
sergey [27]
I think its 550 deggres celsius.
5 0
2 years ago
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