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A 26 g bullet strikes and becomes embedded in a 1.10 kg block of wood placed on a horizontal surface just in front of the gun. If the coefficient of kinetic friction between the block and the surface is 0.20, and the impact drives the block a distance of 9.5m before it comes to rest, what was the muzzle speed of the bullet?
A hot (70°C) lump of metal has a mass of 250g and a specific heat of 0.25 cal/g°C. John drops the metal into a 500 g calorimeter containing 75g of water at 20°C.
A strong weightless rope has a mass m hanging from the middle of it, as shown. The tension force on each rope is 25 N, and the rope droops at an angle of 20.0°. How much mass is hanging from the rope?
An electric power plant that would make use of the temperature gradient in the ocean has been proposed. What is the maximum efficiency of such a system
Find out the magnitude of the centripetal force.
A solenoid of radius 2.4 cm has 420 turns and a length of 16 cm. Find the rate at which current must change
a girl kicks a ball from ground level. the initial velocity of the ball has an x-component of 17 m/s and a y-component of 10 m/s, what is the highest elevation reached by the ball
A wind turbine with a rotor diameter of 50 m is rated at 2500 kW at a hub height wind speed of 10 m/s. Calculate the number of hours per year that the wind is below the cut-in speed
q1. 16.8-kg sled is being pulled across a horizontal surface at a constant velocity. the pulling force has a magnitude
A particular wire has a diameter of 1.7 mm and length of 1.3 m. If its resistance is 15 m?, what is the resistivity of the metal from which it is made
A solenoid is 15 cm long and has 9000 turns. The current through the solenoid is 6A. What is the value of the magnetic field created
A spy satellite circles the Earth at an altitude of 160 km and carries out surveillance with a special high-resolution telescopic camera having a lens diameter of 35 cm
Consider a system consisting of two long, concentric solenoids. The larger solenoid has current running in counter clockwise fashion. Find the magnetic field strength inbetween the solenoids. positive number if it is up
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