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A solid sphere of mass 2.5 kg and a radius 0.15m starts from rest at the top of the a ramp inclined 15 degrees, and rolls to the bottom without slipping. The upper end of the ramp is 0.85m higher than the lower end. What is the total kinetic energy of the sphere when it reaches the bottom of the ramp?
a) if a wheel is turning at 1.2 rad/s, how much time does it take to complete one revoution?
b) A wheel initially has an angular velocity of 18 rad/s but it is slowing at a rate of 2.0 rad/s^2 until it comes to a stop. By the time it stops, how many radians will it have turned through?
The human body can survive an acceleration trauma incident (sudden stop) if magnitude of the acceleration is less than 250;{rm m}/{rm s}^{2}.
A man pushes a lawn mower on a level lawn with a force of 186 N. If 35 percent of this force is directed downward, how much work is completed by the man in pushing the mower 6.5 m.
Explain how much gain or loss does Martha recognize and illustrate what is her basis in the distributed property and in her partnership interest following the distribution?
A 1000-kg car travelling at a speed of 32 m/s skids to a halt on wet concrete where f_k = 0.3. How long are the skid marks.
A plastic rod is rubbed against a wool shirt there by aquiring the charge of -0.80 mC. how many electrons are transfered from the wool shirt to the plastic rod.
a 2.5-kg mass is connected to a spring with spring constant k = 150 N/m and unstretched length 19 cm. the pair are mounted on a frictionless air table, with the free end of the spring attached to a frictionless pivot. the mass is set into circular..
a particle is moving in the xy plane with constant acceleration. at t=0, it has a velocity of v=(4.00i-5.00j) m/s. At t=4.00 s, determine the acceleration of the particle (magnitude and direction)
An isolated conductor has a net charge of +7.90*10^- 6 C and a cavity with a particle of charge q = +2.30*10^-6 C, find the charge on the cavity wall and outer surface
A 60.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.760 and 0.410, correspondingly. What horizontal pushing force is required to (i) just start the crate moving and (ii) slide the crate ..
A drone, flying 300m above ground, observes a man walking on a road in a cold night (0°C). how many photons/sec does it receive from the man and from a similar surface of road
An electron and a proton, starting from rest, are accelerated through an electric potential difference of the same magnitude. In the process, Find the ratio ve/vp
Two lightbulbs operate on the same potential difference. Bulb A has four times the power output of bulb B. What is the ratio of the current in bulb A to the current in bulb B?
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