Neglecting air resistance, a man on a high ladder releases a ball from rest which strikes the ground with 100 J of kinetic energ
1 answer:
Answer:
The correct option is (B) "100 J".
Explanation:
The formula of kinetic energy is given by :
m is mass and v is velocity of object.
In this case, it is mentioned that a man on a high ladder releases a ball from rest which strikes the ground with 100 J of kinetic energy.
If he were to throw it straight upward instead, it will eventually reach the ground with a kinetic energy of 100 J. This is due to the conservation of energy.
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Complete Question
The complete question iws shown on the first uploaded image
Answer:
a
b
Explanation:
Now looking at the diagram let take that the magnetic field is moving in the x-axis
Now the magnetic force is mathematically represented as
x B
Note (The x is showing cross product )
Note the force(y-axis) is perpendicular to the field direction (x-axis)
Now when the loop is swinging forward
The motion of the loop is from y to z to to x to y
Now since the force is perpendicular to the motion(velocity) of the loop
Hence the force would be from z to y and back to z
and from lenze law the induce current opposes the force so the direction will be from y to z to x
Now when the loop is swinging backward
The motion of the induced current will now be x to z to y
Answer:
The ratio is
Explanation:
From the question we are told that
The radius of Phobos orbit is R_2 = 9380 km
The radius of Deimos orbit is
Generally from Kepler's third law
Here M is the mass of Mars which is constant
G is the gravitational constant
So we see that
=>
Here is the period of Deimos
and is the period of Phobos
So
=>
=>