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A 28 kilogram block is connected to an empty 2.14 kilogram bucket by a cord running over a frictionless pulley. The coefficient of static friction between the block and the table is 0.47 and the coefficient of kinetic friction between the block and the table is 0.32. Sand is gradually added to the bucket until the system just begins to move. Neglect mass of cord.
1. Determine the mass of sand added to the bucket.
2. Determine the acceleration of the system.
Two energy reservoirs are at 20 degrees Celsius and 827 degrees Celsius. How much energy does this engine extract from the hot reservoir to do 3500 J of work
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 52.0 m/s and returns the shot with the ball traveling horizontally at 36.0 m/s in the opposite direction. What work does the racket do on the ball
It takes 7.60 ms for the current in and LR circuit to reach 60 percent of its maximum value. Decide the time constant of the circuit.
A fan blade rotates with angular velocity given by ?z(t)= ? ? ? t2, where ? = 5.45rad/s and? = 0.835 rad/s3. Calculate the angular acceleration as a function of time
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A drag force on a falling object in air is directly proportional to the square of its velocity. what will be the kinetic energy of an object
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a student m 97 kg runs at a velocity vi 2.85 ms before jumping on a skateboard. after jumping on the board the
Four identical charges (+2.0 ?C each) are brought from infinity and fixed to a straight line. Determine the electric potential energy of this group
The aorta is a major artery, rising upward from the left ventricle of the heart and curving down to carry blood to the abdomen and lower half of the body. obtain the magnitude (in m/s2) of the blood's centripetal acceleration
A steel cable with total length,52 mand mass,130 kgis connected to two poles. Calculate the wavelength of the resulting wave on the cable
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