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A volleyball player's 3.7 kg arm moves at an average angular velocity of 15 rad/s during execution of a spike. If the average moment of inertia of the extending arm is 0.45 kgxm2, what is the average radius of gyration for the arm during the spike?
A thermos contains 125 cm3 of coffee at 85° C. To cool the coffee, you drop two 13-g ice cubes into the thermos. The ice cubes are at first at 0° C and melt completely. What is the final temperature of the coffee? Treat the coffee as if it were wa..
A parallel-plate capacitor with C = 13 mu or micro FF is charged so as to contain 1.1 J of energy, what is the energy density (the energy per unit volume)
The balance wheel of a watch oscillates with angular amplitude 0.90? rad and period 0.68 s. Find the maximum angular speed of the wheel
Analyse average density of the white dwarf
A bullet with a mass of 4.95 g and a speed of 940 m/s penetrates a tree horizontally to a depth of 6.15 cm. Calculate the magnitude of this frictional force
While taking photographs in Death Valley on a day when the temperature is 52.0°C, What current does he register there if the temperature is -88.0°C
When resistors 1 and 2 are connected in series, the equivalent resistance is 19.7 ?. When they are connected in parallel, the equivalent resistance is 3.96 ?. What are the larger resistance of these two resistors
What is the magnitude of an electric field in which the electric force on a proton is equal in magnitude to its weight, What must the charge (sign and magnitude) of a particle of mass 1.40g
An electron is inside a solenoid, 28 cm from the solenoid axis. At what rate is the solenoid's magnetic field changing
Two charged bodies exert a force of 0.790N on each other. If they are moved so that they are one-fourth as far apart, what force is exerted.
Now a peg is placed 4/5 of the way down pendulum's path so that when the mass falls to its vertical position it hits and wraps around the peg. As it wraps around the peg and attains its maximum height it ends a distance of 3/5 L below its starting po..
An 84.6-kg climber is scaling the vertical wall of a mountain. His safety rope is made of nylon that, How much is the rope stretched when it breaks his fall and momentarily brings him to rest
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