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If 60.0% of the kinetic energy delivered with a 907g hammer with a speed of 7.80 m/s is transformed into heat that flows into the nail and does not flow out, what is the increase in temperature of an 8.00 g aluminium nail after it is struck 10.0 times?
A novice skier, starting from rest, slides down a frictionless 35° incline whose vertical height is 118 m. Explain how fast is she going when she reaches the bottom? Illustrate what was the initial speed of the arrow?
Two 1.0 g beads, each charged to +5.0 nC, are 2.0 cm apart. A 2.0 g bead charged to -10 nC is exactly halfway between them. What are the speeds of the positive beads
q1. an object falls because of gravity at a rate of -9.80 ms2 - sign is indicative of a downward direction for 10.00
An electron moving in the positive x direction experiences a magnetic force in the positive z direction. If Bx=0, then what is the direction of the magnetic field? I got the positive y direction, but the answer is the negative y direction, why is ..
A cylinder is rotating about an axis that passes through the center of each circular end piece. Find the magnitude of the angular deceleration of the cylinder
A circular coil has 30 turns and a radius of 4 cm. The coil is placed in a magnetic field directed along the axis of the coil. The magnitude of the magnetic field varies according to: B (t) = 0.010t + 0.040 t2, where t is in seconds and B is in tesla..
a solid metal sphere of radius a 1.30 cm is surrounded by a concentric spherical metal shell of inner radius b 3.50
a 0.06m 3 rigid tank initially contains water at 1.5 mpa with a quality of 20. the tank is heated and a pressure
an airport has runways only 161 m long. a small plane must reach a ground speed of 40 ms before it can become airborne.
a a football player kicks a football in a field goal attempt. when the football reaches its maximum height what is the
Water is drawn from a well in a bucket tied to the end of a rope whose other end wraps around a solid cylinder of mass 50 kg and diameter 25 cm. what is the angular acceleration of the 50-kg cylinder
What is the tension in the string.At one time, television sets used "rabbit-ears" antennas. Such an antenna consists of a pair of metal rods.
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