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A car is driven 165 km west and then 95 km southwest. What is the displacement of the car from the point of origin (magnitude and direction)?
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Question: A stone is thrown vertically upward with a speed of 24.0m/s. a) how fast is it moving when it is at a height of 13.0m? I got 17.9 m/s b) How much time is required to reach this height? I got 4.28s and 6.20s c) ...
A rock takes 2.1 s to hit ground when it is thrown straigh up from a cliff with initial velocity of 7.5 m/s. Calculate height of the cliff in m & length it would take to reach the ground if thrown down with same speed.
Question: A piano tuner stretches a steel piano wire with a tension of 765 N. The steel wire has a length of 0.500m and a mass of 3.75g . 1. What is the frequency f1 of the string's fundamental mode of vibration? 2. What ...
Question: A plastic rod is charged to -20 nC by rubbing. Have electrons been added to the rod or protons removed? Explain. How many electrons have been added or protons removed? The response must be typed, single spaced, ...
Question: A pendulum has a period of 1.77 s on Earth. Part A: What is its period on Mars, where the acceleration of gravity is about 0.37 that on Earth? Express your answer to two significant figures and include the appr ...
An observer sees an airplane flying directly overhead and determines that the distance from the wingtip to wingtip subtends and angle of 0.0080 radians. She knows that the wingspan of the airplane is actually 160 feet. W ...
Question: An organ pipe is made to play a low note at 27.5 Hz, the same as the lowest note on a piano. A) Assuming a sound speed of 343 m/s, what length open-open pipe is needed? B) What length open-closed pipe would suf ...
Question: A pendulum has a period of 1.95 s on Earth. What is its period on Mars, where the acceleration of gravity is about 0.37 that on Earth? Express your answer to two significant figures and include the appropriate ...
Question: A sled of mass m is being pulled horizontally by a constant upward force of magnitude F that makes an angle theta with the direction of motion. The coefficient of kinetic friction is mu_k. The average velocity ...
Question: At one point in a pipeline the water's speed is 3.00 m/s and the gauge pressure is 5.00 x 10 4 Pa. Find the gauge pressure at a second point in the line, 11.0 m lower than the first, if the pipe diameter at the ...
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