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Q1. While a roofer is working on a roof that slants at 44.0 above the horizontal, he accidentally nudges his 93.0 toolbox, causing it to start sliding downward, starting from rest.
Q2. Two balls, of masses m_A = 44 {rm g} and m_B = 61 {rm g}, are suspended. The lighter ball is pulled away to a 66 ^circ angle with the vertical and released. Assume that the positive x axis is fixed to the right. Q3. A potter's wheel having a radius 0.55 m and a moment of inertia 13.8 kg•m2 is rotating freely at 50 rev/min. The potter can stop the wheel in 4.5 s by pressing a wet rag against rim and exerting a radially inward force of 69 N. Find out an effective coefficient of kinetic friction between the wheel and the wet rag.
A 7.80-g bullet moving at 560 m/s penetrates a tree trunk to a depth of 5.2 cm. Use work and energy considerations to find the average frictional force that stops the bullet
question1one 2.9 kg paint bucket is hanging by a massless cord from another 2.9 kg paint bucket also hanging by a
A 5.61-mm-high firefly sits on the axis of, and 10.3 cm in front of, the thin lens A, whose focal length is 6.99 cm. Is this image upright or inverted with respect to the firefly
Three objects with masses, m1 = 6.0 kg, m2 = 10.0 kg, and m3 = 15.0 kg, are attached by strings over frictionless pulleys as indicated. The horizontal surface is frictionless and the system is released from rest. Using energy concepts, find out th..
A loudspeaker of mass 19.00 is suspended the distance of = 1.80 below the ceiling by two cables that make equal angles with the ceiling. Each cable has the length of = 3.50. What is the tension in each of the cables.
How much charge passes during the starter motor
When an electric circuit is being assembled, a common practice is to twist together two wires carrying equal currents in opposite direction
A rotational axis is directed perpendicular to the plane of a square and is located . Two forces, 1 and 2, are applied to diagonally opposite corners, and act togther the sides of the square, first as shown in part a and then as shown in part b of..
A 4.0- kg wooden block rests on a level table. The coefficient of friction between the block, What is the acceleration of the wooden block
What is the efficiency of a cyclical heat engine in which 65.0 kJ of heat transfer occurs to the environment for every 95.0 kJ of heat transfer into the engine
A plane sinusoidal electromagnetic wave carries 16.0 J of energy through a small window of area 0.20m2 in 10.0 s. What is the intensity of the wave
An airplane accelerates down a runway at 3.20 m/s2, finally lifts off the ground Determine the distance traveled before takeoff?
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