Answer:
22050 J
Explanation:
Given Mass of the ball, m = 4.5 Kg
Height, h =500 m
Acceleration due to gravity,
To calculate the potential energy we use formula,
Substituting the given values, we get
PE = 4.5× 9.8×500
=22050 J
Which answer best describes US national Road
2 answers:
You might be interested in
Answer:
a
The magnitude of the force is
The direction is from south to north i.e upward
b
The magnitude of the force is
The direction is towards the west
c
The magnitude of the force is
the direction of the magnetic field is parallel to the direction of the current (south to north ) hence the direction in 0 in comparison to the direction of the current
d
From the value of force we got the answer to this question is No
Explanation:
Generally magnetic force is mathematically represented as
Where the B is the magnitude of the magnetic field which is given as
is the current with a value of
L is the length of the wire given as
Substituting the value
For the first case where the current is moving from west to east and we are told that the magnetic field is from south to north the according to Fleming's right hand rule the force(exerted by earths magnetic field ) would be moving from south to north (i.e upward)
For the second case where current is moving vertically upwards the direction of the force is to the west according to Fleming's right hand rule
According to Newton’s law of universal gravitation, as we move to higher altitudes, the force of gravity on us decreases and as we gain mass, the force of gravity on us increases both are the true statement.
<u>Explanation: </u>
Newton law of universal gravity extends gravity beyond the earth's surface. This gravity depends on the masses directly and inverse to the distance square between their centers.
Where,
F – Force, G – gravitational constant, M and m – masses in kg, r – distance in meters.
Since force is proportional to the masses of interacting objects. If the mass of any one object increases, gravity between them also gets increased. When moving to higher altitude, force decreases as the distance is inverse proportion to gravity.