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A 5kg block is accelerated at 3 m/s^2 while fighting a frictional force of 25 N. What force needs to be applied to the block?
A gymnast of mass 56.0 {rm kg} hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch. Use the value 9.81 {rm m/s^2} for the acceleration of gravity.
A speeding motorist traveling 105km/h passes a stationary police officer. The officer immediately begins pursuit at a constant acceleration of 12km/h/s (note the mixed units).
A small immersion heater is rated at 350 W. Estimate how long it would take a heat a cup of soup (assume this is 250 mL of water) from 20C to 60C.
An electron is then fired directly toward the center of the shell, from point P at distance r from the center of the shell (r >> R). What initial speed v0 is needed for the electron to just reach the shell before reversing direction.
A 70- kg gymnast stretches a vertical spring by 0.48 m when she hangs from it. How much energy is stored in the spring
A 9.00 kg point mass and a 15.0 kg point mass are held in place 50.0 cm apart. A particle of mass m is released from a point between the two masses 19.0 cm from the 9.00 kg mass along the line connecting the two fixed masses.
Illustrate what are the nominal and effective interest rates? Also determine the effective interest rate that a typical credit card issuer charges today.
The manometer tube has an internal diameter of 0.5 cm and it is initially filled with water. Exactly 2 cm3 of an unknown liquid is then poured into one leg of the manometer, and a displacement of 5 cm between the surfaces is measured as shown. Fin..
A soccer player kicks the ball toward a goal that is 16.0 m in front of him, Find the speed of the ball when the goalie catches it in front of the net
Then, a thin conducting wire connects the spheres, redistributing the charge on each sphere. When the wire is removed the spheres still repel but with a force of F2 = 0.100 N. Using this information, find the initial charge on each sphere, q1 and ..
Two charges, q1 and q2, are separated by a distance, r, and exert a force, F, on each other. What will the new force be if:
Three balls are constrained to move on the circumference of a circle of radius R. find the characteristic frequencies of the system
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