To solve this problem we will apply the Newtonian concept of gravitational acceleration produced by a planet. This relationship is given by:
Where,
G = Gravitational Universal Constant
M = Mass of Earth
r = Radius
The values given are based on the constants of the earth, so they can be expressed as
The relationship of gravity would then be given:
The relationship with the new planet, from the gravity of the earth would be given
The relationship with the weight of the earth would be given as:
Therefore the weigh on this planet would be 96N
The angle of reflection made when the angle of incidence of light falling on a plane mirror is 30 degrees is 30 degrees (made with a surface normal to the mirror surface.) The reflected ray will make an angle of (90- 30=) 60 degrees with the mirror surface.
It is referred to as light reflection when a light ray hits a polished or smooth surface and bounces back. The incident light rays hit the surface and are reflected off of it. The beam that returns is referred to as the reflected ray.
The angle of reflection and the angle of incidence, are the angles formed by these light rays when they reflect back or fall on a surface, respectively.
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<span>D. More heat is given off than is put into the reaction.
Exothermic reactions release heat more than the energy put into the reaction, opposite is an endothermic reaction.</span>
There are several differences between<span> a </span>physical and chemical change<span> in matter or substances. A </span>physical change<span> in a substance doesn't </span>change<span> what the substance is. In a </span>chemical change<span> where there is a </span>chemical<span> reaction, a new substance is formed and energy is either given off or absorbed.</span>
Answer:
The mass of the feather would be 0.0075 kg.
Explanation:
If the feather were to be on earth, it would have experienced the gravitational pull of the earth downwards. So that from Newton's second law of motion,
F = mg
where f is the force on the object, m is the mass of the object and g is the acceleration due to gravity of the earth.
But, F = 0.075 N, g = 10 m/.
So that,
0.075 = m x 10
m =
= 0.0075 kg
The mass of the feather would be 0.0075 kg.