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inessss [21]
3 years ago
7

Calculate the force of gravity acting on an object that has a mass of 1.3 kilograms. The object is on Earth soyuz 9.8 m / S 2 fo

r the acceleration due to gravity
A 12.7 N
B 1270 N
C 0.13 N
D 7.5 N
Physics
1 answer:
aleksklad [387]3 years ago
4 0
A) 12.7 cause
weight = g. mass
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It is difficult for astronomers to find object like planets and asteroids because it takes a lot of time to verify the objects locations and what surrounds a certain object in order to prove and be precise of its location
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3 years ago
Students will consider the following items: ice, glass, copper, and aluminium. what happens to each item when hammered? what pro
vladimir2022 [97]

All metals except potassium and sodium, have a property known as malleability. Malleability is the quality of something that can be shaped into something else without breaking. So when aluminium and copper are hammered they will not break. Rather they will change shape and become thin or flat at the area where its hammered.

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3 years ago
In which direction does a bag at rest move when a force of 20 newton's is applied from the right?
Olegator [25]

The bag moves to the left.

This is because of Newton's third law of motion that states:

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8 0
3 years ago
The electromagnetic wave that delivers a cellular phone callto
spin [16.1K]

Answer:

E=2.41\cdot 10^{-5} J

Explanation:

The intensity of an electromagnetic wave can be expressed in terms of the magnetic field using the next relationship:

I_{average}=\frac{cB_{0}^{2}}{2\mu_{0}} (1)

  • c is the speed of light (3*10⁸ m/s)
  • μ₀ is the permeability of free space (in vacuum ) (1.26*10⁻⁶ N/A²)
  • B₀ is the magnetic field

I_{average}=\frac{3\cdot 10^{8}(1.5\cdot 10^{-10})^{2}}{2\cdot 1.26\cdot 10^{-6}}

I_{average}=2.68\cdot 10^{-6} W/m^{2}

Now, let's define the relationship between power (P) and average intensity (I).

I_{average}=\frac{P}{A}

  • P is the power
  • A is the area crossed

So we can calculate the power.

P=I_{average}\cdot A=2.68\cdot 10^{-6}\cdot 0.20=5.37\cdot 10^{-7} W

Finally, energy is the product of P times time, so:

E=P\cdot t=5.37\cdot 10^{-7} \cdot 45=2.41\cdot 10^{-5} J

I hope it helps you!

5 0
2 years ago
What material is rare in the atmosphere of earth, but common in the atmospheres of mars and venus?
Oksanka [162]
The answer is carbon dioxide
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3 years ago
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