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A car has a mass of 1000 kilogram it's at the top of a 10o hill. Therefore if you were to draw a triangle the base of the triangle would be 50 meter in length as well.
a. Find what is it gravitational potential energy relative to the bottom of the hill?b. If the car rolls down the hill with (the engine off) with negligible friction and air resistance determine what will its kinetic energy be when it reaches the bottom?
As a space craft approaches a planet, the rocket engines on it are fired to slow it down so it will go into orbit around the planet. how long must the engines be fired
A photon Compton scatters off of a stationary electron at an angle of 60 °. Determine the initial wavelength of the photon
A 69-kg construction worker stands at the far end of the beam. What is the magnitude of the torque about the point where the beam is bolted in place.
Calculate the fast neutron flux needed to produce the same injury as 0.50 mSv/hr of thermal neutrons, and then, as 6,000 thermal neutrons per sq. cm per sec.
The angular momentum of a flywheel having a rotational inertia of 0.125 kgm2 decreases from 3.0 to 2.0 kgm2/s in a period of 1.5 s. How much work was done on the wheel
An object is subject to a restoring force F = 8x3, How much work must be done to move the object from x = 0.10 to x = 0.47 m
The volume control on a surround-sound amplifier is adjusted so the sound intensity level at the listening position increases from 21 to 59 dB. What is the ratio of the final sound intensity to the original sound intensity?
A sign has a mass of 1050 kg, a height h = 1 m, and a width W = 4 m. It is held by a light rod of length 5 m that is perpendicular to a rough wall. What is the smallest value of the coefficient of friction
A 50.0 kg boy runs at a speed of 10.0 m/s and jumps onto a cart. The cart is initially at rest. what is the mass of the cart
A proton moving freely in a circular pathperpendicular to a constant magnetic field takes 1.00μs to complete one revolution. Determine themagnitude of the magnetic field.
A sample of an unknown material appears to weigh 300N in air and 200N when immersed in alcohol of specific gravity 0.700. What are the volume and density of the material
Positive point charges q and 2q are located at x = 0 and x = 3d, respectively. What is the electric field at x = d (point P)? (Use any variable or symbol stated above along with the following as necessary: k for Coulomb constant.) magnitude E = di..
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