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The force that a professional boxer''s fist exerts on his opponent''s head is equivalent to being hit with a 5.9kg bowling ball traveling at 8.9m/s that stops in 0.018 s. Determine the average force that the fist exerts on the head.
a block of mass m18 rests on a frictionless surface and is attached to a light cord that is wrapped around a solid
A 2.46×10^4 rocket blasts off vertically from the earth's surface with a constant acceleration. Throughout the motion considered in the problem, suppose that remains constant. Inside the rocket, a 15.10 instrument hangs from a wire that can support a..
Brass is an alloy of copper and zinc. Does the addition of zincto copper cause an increase or decrease in the speed of sound inbrass rods compared to copper rods? Explain.
a 218 kg log is pulled up a ramp by means of a rope that is parallel to the surface of the ramp. the ramp is inclined
A 2150 kg truck is traveling east through an intersection at 1.5 m/s when it is hit simultaneously from the side and the rear. What are their speed and direction just after the collision
a child and a sled with a combined mass of 50 kg slide down a frictionless slope. what is the height of the hill
A force of 250 N is applied to a hydraulic jack pistonwith a 0.1m diameter. If the output piston, which supportsthe load, has a diameter of 0.5m, How much weight can be lifted
A hollow spherical shell (radius R) carries a surface potential V(r=R, teta, Phil) = kcos(Squared) teta, sine teta. Find the potential inside and outside of the cylinder, explicitly evaluating the first four nonzero coefficients in each case.
A capacitor consisting of two concentric spheresof radius R1 and R2 =3.50·R1 has a capacitance of C = 5.00 pico Faradsand is charged to a potential difference of 86.0 Volts. Calculate the energy stored in the capacitor
A man moves the 10-g object shown in a vertical plane from position X to position Y along a circular track of radius 20 m. The process takes 0.75 min. The workdone by the man is about:
the barringer meteor crater in northern arizona is 180m deep and 1.2km in diameter. the fragments of the meteor lie
An alternating source drives a series RLC circuitwith an emf amplitude of 5.80 V, at aphase angle of +32.5°. what is the potential difference across the inductor
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