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One side of the roof of a building slopes up at 43.5°. A roofer kicks a round, flat rock that has been thrown onto the roof by a neighborhood child. The rock slides straight up the incline with an initial speed of 15.0 m/s. The coefficient of kinetic friction between the rock and the roof is 0.340. The rock slides 10.0 m up the roof to its peak. It crosses the ridge and goes into free fall, following a parabolic trajectory above the far side of the roof, with negligible air resistance. Determine the maximum height the rock reaches above the point where it was kicked.
A 500 ton jet is flying at an altitude of 30,000ft with a constant speed of 520mph. what is the total resistance force action on the jet
A spring is oscillating with a frequency of 1.7Hz. 3.9 seconds after the spring is released it is -20cm from equilibrium. Find the amplitude of the spring
A string of length L, which is clamped at both ends and has a tension T, is pulled aside a distance h at its center and released. What is the energy of the subsequent oscillations
Three identical capacitors are connected in parallel to a battery. If a total charge of Q flows from the battery, how much charge does each capacitor carry
On a very muddy football field, a 100 linebacker tackles a 75 halfback. Immediately before the collision, the linebacker is slipping with a velocity of 8.9 north's and the halfback is sliding with a velocity of 7.9 east's.
A light string can support a stationary hanging load of 25.8 kg before breaking. What range of speeds can the object have before the string breaks
when light of a wavelength of 200 nm is incident on a surface, What is the work function of the surface
The highest theoretical efficiency of a gasoline engine, based on the Carnot cycle, is 0.300 or 30.0%. what is the temperature in the cylinder immediately after combustion
q1. how did pavlov and watsons focus on scientific inquiry of behaviours differ from earlier viewpoints of
When you ride a bicycle at constant speed, almost all of the energy you expend goes into the work you do against the drag force of the air. how much power does she expend as she cycles
A particle has an acceleration of 6.39 for 0.28. At the end of this time the particle's velocity is 9.31 .What was the particle's initial velocity.
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -0.6020 N when separated by 50 cm, center-to-center.
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