Answer:
The moment of inertia of the wood sphere is greater than that of
the one made of lead.
Explanation:
Current Speed, as it couldn't be the average speed or anything like that since it's constantly changing. (It made me write the extra stuff)
Answer:
0.0061 J
Explanation:
Parameters given:
Number of turns, N = 111
Radius of turn, r = 2.11 cm = 0.0211 m
Resistance, R = 14.1 ohms
Time taken, t = 0.125 s
Initial magnetic field, Bin = 0.669 T
Final magnetic field, Bfin = 0 T
The energy dissipated in the resistor is given as:
E = P * t
Where P = Power dissipated in the resistor
Power, P, is given as:
P = V² / R
Hence, energy will be:
E = (V² * t) / R
To find the induced voltage (EMF), V:
EMF = [-(Bfin - Bin) * N * A] / t
A is Area of coil
EMF = [-(0 - 0.669) * 111 * pi * 0.0211²] / 0.125
EMF = 0.83 V
Hence, the energy dissipated will be:
E = (0.83² * 0.125) / 14.1
E = 0.0061 J
A) It must have a medium.
A.)the downward force on the floor is equal to the upward force on his feet
Explanation:
When a basketball player jumps to make a shot, the downward force on the floor is equal to the upward force on his feet. This is according to the newton's law of motion.
Newton's law of motion states that "action and reaction are equal and opposite in direction."
- The downward force is the force exerted by his feet for the jump.
- The upward force is the force exerted by the floor to aid is jump.
- We see that both the upward and downward forces are in opposite direction.
- The net force allows the basketball player to effectively jump
Learn more:
Newton's law of motion brainly.com/question/11411375
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