Answer:
The gravitational potential energy of that rock is 174371.4 J.
Explanation:
Given
To determine
We need to find the gravitational potential energy of the rock
We know that the potential energy of a body is termed as the stored energy due to its position.
One kind of energy comes from Earth's gravity — Gravitational potential energy (GPE).
Gravitational potential energy (GPE) can be determined using the formula
where
- is the mass
- is the gravitational acceleration which is equal to g = 9.8 m/s²
- is the height
- GPE is the Gravitational potential energy
now substituting m = 59.31, h = 300 and g = 9.8
J
Therefore, the gravitational potential energy of that rock is 174371.4 J.
Answer:
A). A few of the positive particles aimed at a gold foil seemed to bounce back off of the thin metallic foil.
Explanation:
Scientists decided to change the model of the atom when they discovered new evidence that showed 'few of the positive particles aimed at a gold foil seemed to bounce back off of the thin metallic foil.' On this ground, <u>Rutherford concluded that atom is mostly made up of empty space and thus, he proposed a nucleus model of atom in which the atom comprises of the tiny and positively charged nucleus is surrounded by electrons with a negative charge</u>. Thus, <u>option A</u> is the correct answer.
Answer:
Meteorite
Explanation:
A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originated in outer space and survived its passage through the atmosphere to reach the surface of earth.
The speed of light, because light is made of photon's, and photon's have infinite mass which allows them to move so fast.
Since velocity describes both speed and direction, you can call it a "vector" quantity, and legitimately label it "velocity".
Since speed has no direction, it's a scalar quantity, and it's wrong to call it "velocity" as so many often do.