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A football punter accelerates a football from rest to a speed of 13 m/s during the time in which his toe is in contact with the ball (about 0.16 s). If the football has a mass of 0.50 kg, what average force does the punter exert on the ball?
A sheet of glass is coated with a 495-nm-thick layer of oil (n = 1.42), What is the color of reflected light and What is the color of the most part of transmitted light
a 1.0 kg wheel of radius 0.5 m is rotating at a rate of 40 rad/s about an axis through its center of mass. through what angle did the wheel turn while it is being stopped
An experimenter bombards a target of 54Cr with alpha particles such as 4He + 54Cr -> p+ 57Mn Suppose the incoming alpha particle has 26MeV kinetic energy in the lab, What is the kinetic energy of the detected proton
A 1200N uniform boom at 65 to the horizontal is supported by a cable at an angle of 25. The boom is pivoted at the bottom, find the tension in the supported cable
Glider A with mass 0.400 kg, gliding with a velocity of magnitude 0.50 m/s on a frictionless, horizontal air track, makes a perfectly elastic head-on collision with a glider B with mass, Find the mass of the glider B
In the annual battle of the dorms, students gather on the roofs of Jackson, A second balloon launched at the same angle hits the edge of Walton's roof. Find the initial speed of this second balloon
Find the work done by an ideal engine which extracts 11500.0 J of heat from its hot reservoir while operating between 530.0 K and 310.0 K
In the picture below, a 10 kg bar 1.2 m long is set up to rotate about its center (the dark circle). Determine the net torque on the bar
An undersea research chamber is spherical with an external diameter of 5.40 m. The mass of the chamber, when occupied, is 70400 kg. It is anchored to the sea bottom by a cable.
Consider a Boeing 777-200 airplane of wing span 60.93 m cruising horizontally at Mach 0.785, Find the emf induced across its wing
A cable is lifting a construction worker and a crate, as the drawing shows. What is the tension in the cable below the worker
q1.an green hoop with mass mh 2.4 kg and radius rh 0.14 m hangs from a string that goes over a blue solid disk pulley
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