Answer:
Explanation:
Let v be the terminal velocity of the bar .
emf induced in the bar of length L
= B L v where B is the value of magnetic field.
current i in the circuit containing resistance R
i = induced emf / R
BLv / R
Magnetic force in upward direction in the bar
F = BiL
= BL x BLv / R
B²L²v / R
For attainment of uniform velocity
magnetic force = weight
B²L²v / R = mg
so current
i = BLv / R
Answer: A
Explanation: Any short-duration exercise that is powered primarily by metabolic pathways that do not use oxygen. Examples
of anaerobic exercise include sprinting and weight lifting.
Answer:
velocity
Explanation:
velocity includes the direction taken by a person or object
Answer:
Law of conservation of mechanical energy.
Explanation:
During motion of a block sliding on the floor from the bottom of the ramp to the moment it stops , kinetic energy is converted into potential energy so that total energy remains constant . No other conversion is taking place , if we consider friction to be absent in the system . Potential energy and kinetic energy form part of mechanical energy . So we can say that mechanical energy is conserved . Hence , system is following law of conservation of mechanical energy.
A person running down a hill is the answer to this
