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3 years ago

The gravity of earth depends on the ___ from its . as this _increase, the magnitude of the gravity ___.

1 answer:

3 0

The gravity of earth depends on the magnetism from its core. as this magnetism increases, the magnitude of the gravity increases.

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Why was the idea of plate tectonics difficult for many scientists to accept for many years after it was first introduced?

pentagon [3]

I think the correct answer from the choices listed above is the second option. The idea of plate tectonics was difficult for many scientists to accept for many years after it was first introduced because there was no explanation yet for how it was happening. It was only to the recent times that these were proven.

3 0

3 years ago

The term 'DENSITY' tells us…

pogonyaev

Answer:

The answer is A

Explanation:

Density basically shows the amount of mass per volume of something. You can easily find Density with the equation D=m/v

D= Density

m= mass

v= volume

3 0

3 years ago

If the mass of a body is 9.8kg on the earth, what would be its mass on the moon?

devlian [24]

Answer:

it will remain same because mass of the body is constant everywhere

4 0

2 years ago

Two long, straight wires are separated by a distance of 9.15 cm . One wire carries a current of 2.79 A , the other carries a cur

Dafna1 [17]

Answer:

The force is the same

Explanation:

The force per meter exerted between two wires carrying a current is given by the formula

$\frac{F}{L}=\frac{\mu_0 I_1 I_2}{2\pi r}$

where

$\mu_0$ is the vacuum permeability

$I_1$ is the current in the 1st wire

$I_2$ is the current in the 2nd wire

r is the separation between the wires

In this problem

$I_1=2.79 A\\I_2=4.36 A\\r = 9.15 cm = 0.0915 m$

Substituting, we find the force per unit length on the two wires:

$\frac{F}{L}=\frac{(4\pi \cdot 10^{-7})(2.79)(4.36)}{2\pi (0.0915)}=2.66\cdot 10^{-5}N$

However, the formula is the same for the two wires: this means that the force per meter exerted on the two wires is the same.

The same conclusion comes out from Newton's third law of motion, which states that when an object A exerts a force on an object B, then object B exerts an equal and opposite force on object A (action-reaction). If we apply the law to this situation, we see that the force exerted by wire 1 on wire 2 is the same as the force exerted by wire 2 on wire 1 (however the direction is opposite).

3 0

3 years ago

What is kinetic energy?

Lemur [1.5K]

Answer:

A, the energy an object has due to its motion.

Explanation:

Kinetic energy is the energy created by motion.

3 0

2 years ago

Read 2 more answers

The gravity of earth depends on the _____ from its ____ . as this _____increase, the magnitude of the gravity _____.

The gravity of earth depends on the ___ from its . as this _increase, the magnitude of the gravity ___.