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Draw free body diagrams for a car cruising at a constant velocity (a) on a level road and (b) on a uphill road? Include gravity, the normal, drag, and tire friction forces. What to the vectors sum to?
A freezer of resistance 9.6 is connected to a 123.3 V source. What is the power delivered when this freezer is on
A 200.0 kg flat-bottomed boat floats in fresh water, which has a density of 1000.0 kg/m3. Assuming that the base of the boat is 1.42 m wide and 4.53 m long, how much of the boat is submerged when it carries three passengers whose total mass is 242kg?
Consider a resistor series RC circuit with a 6.7 µF, capacitor, a 4.5 × 10^6? resistor and 38 V emf. Find the maximum charge on the capacitor
Att= 0 an electron crosses the positivey-axis (sox= 0) at30cm from the origin with velocity6.105m/s in the positivex-direction. It is in a uniform magnetic field.
A 2.0 kg pendulum bob on a string 1.5m long is released with a velocity of 0.0 m/s when the support string makes an angle of 60 degrees with the vertical. What is the tension in the string at the bottom of the swing?
Early skeptics of the idea of a rotating Earth said that the fast spin of Earth would throw people at the equator into space. The radius of Earth is about 6.38 x 103 km. Show why this objection is wrong by calculating
An ideal spring is compressed 12 centimeter from the equilibrium length resulting in 72 Joule of potential energy being stored in the spring. Find what compression from the equilibrium length would be required
q1. a small car of mass 831 kg is parked at the back a small truck of mass 1553 kg on a level road. the brakes of both
uniform thin rod of length L=2.5 m and mass 2 kg can rotate in a horizontal plane about a vertical axis through its center. what is the angular velocity of the rod immediately after the collision
An instructor wants to use a lens to project a real image of a light bulb onto a screen 2.27 m from the bulb. what focal length lens will be needed
Light traveling in air enters a material at an angle of 25 degrees with respect to the normal. The refracted beam in the material makes an angle of 18 degrees with respect to the normal. Calculate the index of refraction of the material.
problem 1 a ball is thrown from atop a cliff with an initial speed of 30 ms at an angle of 40o above the horizontal.
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