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A 330g air track cart on a horizontal air track is attached to a string that goes over a pulley with a moment of inertia of 5.00*10^-6 kg*m^2 and a radius of 1.35 cm. a 255-g mass hangs from the other end of a string and is released. Write Newton’s second law for each of the three objects.
Ball 1, with a mass of 150 g and traveling at 11 m/s, collides head on with ball 2, which has a mass of 300 g and is initially at rest. What are the final velocities of each ball if the collision is perfectly elastic
A nuclearpower planthas a reactor that produces heat at the rate of870MW. At what rate is heat discarded to the environment by this power plant
The nuclear reaction that powers the sun is the fusion of four protons into a helium nucleus. How much energy is released in each fusion
Assuming a coefficient of friction of 0.45 between the disk and the surface it slides on, how far will it travel (after leaving the spring) before coming to a stop
An object's terminal velocity is 52.135 m/s on a dry day (when the density of air is 1.21356 kg/m^3. What is the density of the humid air
A 0.50-kg mass is attached to a spring of spring constant 20 N/m along a horizontal, frictionless surface. What is the total energy of the system
Transverse waves on a string have wave speed v=8m/s , amplitude A=0.0700 m , and wavelength lambda= 0.320 m . The waves travel in the -x direction, and at t = 0 the x = 0 end of the string has its maximum upward displacement.
A driver measures her "cold" tire gauge pressure to be 1.97 105 Pa. The measurement is made before driving, Find the final temperature of the air in the tires
A particle falls to Earth starting from rest at a great height(many times Earth's radius). Neglect air resistance and show thatthe particle requires approximately 9/11 of the total time of fallto traverse the first half of the distance. [Note: You wi..
a small object of mass 2.40 g and charge -15 microc floats in a uniform electric field. what is the magnitude and
A bowling ball of mass 1 kg hits a spring with velocity 1 m/s. The spring constant is also 1 (how convenient!). What is the maximum compression of the spring in centimeters
A 120 V space heater has two power settings. The equivalent resistance at the two settings are 19 ? and a 37 ?, After making a guess, determine the power at the low setting
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