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A skateboarder, starting from rest, rolls down a 13.1-m ramp. When she arrives at the bottom of the ramp her speed is 8.89 m/s.
(a) Determine the magnitude of her acceleration, assumed to be constant.
(b) If the ramp is inclined at 26.5 ° with respect to the ground, what is the component of her acceleration that is parallel to the ground?
The critical angle for total internal reflection for sapphire surrounded by air is 34.4°. Calculate the index of refraction of the substance
A mass of 50 kg hangs from a cable that, in turn, is tied to two other cables, What are the tensions in the two upper cables, TL and TR
what is the distance between town and john's current location? Illustrate what is john's current location?
A particle is launched in a gravitational field (g) with an initial velocity of v nought at an angle of theta with respect to the horizontal, Write down the equations for displacements along x- and along the y- axis as a function of time (t)
Three point masses each of mass m are connected by two thin rods each of mass M and length L. The central mass is at an origin and the z-axis is directed out of the page.
How does the decrease in gravitational potential energy of a falling ball compare to its increase in kinetic energy.
What is the magnitude of the normal force. What is the total translational kinetic energy of gas molecules.
A light ray in air is incident on a transparent material whose index of refraction is n, Evaluate your expression for light incident on glass
For your final exam in electronics, you're asked to build an LC circuit that oscillates at 15kHz, What values of inductance and capacitance must you use
Two mirrors meet at a 133° angle. If light rays strike one mirror at 40°, at what angle ? do they leave the second mirror?what is the value of h.
Draw the circuit with the following criteria; double acting cylinder used for broaching holes into metal plates. The cylinder is 24" long mounted vertically, What is the minimum horsepower required by the prime mover
Imagine two Einstein solids in thermal contact. A has 300 atoms and B has 200 atoms, and qtotal = 100, what is the equilibrium macrostate
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