E = mc^2 is an equation derived by physicist Albert Einstein. It means "energy equals mass multiplied by speed of light squared (or multiplied by itself)." It expresses the fact that both mass and energy are the same physical entity and can be changed into each other. In fact, energy and mass are different forms of the same thing. In the said equation, the mass (represented by m) multiplied to the velocity of light squared (c^2) is equivalent to kinetic energy (e).
The E = mc^2 equation explains how every star (including our Sun) works by nuclear fusion (atoms fusing together while some of their mass is converted into energy), the atomic energy produced by nuclear power plants and atomic energy released by atomic bombs, and how matter can be destroyed and converted to energy and energy can be converted back to mass.
I assume the x-y axis are tilted such that the x-axis is parallel to the surface of the hill while the y-axis is perpendicular to it.
In this case, the x-component of the weight is given by:
where
m is the mass of the car
g is the acceleration of gravity
is the angle of the hill
Substituting numbers into the formula, we find
Answer:
0.038 m/s, 0.0096 m/s²
0.101
0.103
Explanation:
The speed is given by
v = 2πr / T
v = (2 * π * 0.15) / 25
v = 0.9426 / 25
v = 0.038 m/s
Acceleration, a is given by
a = v² / r =
a = 0.038² / 0.15
a = 0.001444 / 0.15
a = 0.0096 m/s²
Ratio of apparent weight to true weight at the top
w = m (g - a) / (m g)
w = 1 - a/g
w = 1 - 0.0096 / 9.81
w = 0.9904 / 9.81
w = 0.101
Ratio of apparent weight to true weight at bottom
w = m (g+a)/ (m g)
w = 1 + a/g
w = 1 + 0.0096 / 9.81
w = 1.0096 / 9.81
w = 0.103
Answer:
So -24.5 m merely means the depth of the base of the tower ie the ground from the top of the tower. So wrt the ground height of the tower = 24.5 m.
Explanation:
