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A humanitarian aid package is dropped from a plane flying horizontally 500 m above the ground with a speed 100 m/s. What is the speed of the package at the time of impact? (Calculate the total speed, not a horizontal or vertical projection.)
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Question - A stretched string has a mass per unit length of 5.00 g/cm and a tension of 10.0 N. A sinusoidal wave on this string has an amplitude of 0.12 mm and a frequency of 100 Hz and is traveling in the negative direc ...
Suppose the convention were adopted that defines W and W 0 in the first law of thermodynamics to be the "work done on the system by the surroundings." a. Write the first law with this alternate convention. b. Why do the ...
Question: A projectile is fired with speed (V0) at an angle theta) from the horizontal as shown in the figure . Part B: What is the range of the projectile? Express the range in terms of (V0, theta, or g) Part C: Find th ...
Question: A solid wood door 1.00 m wide and2.00 m high is hinged along one side and has a total mass50.0 kg. Initially open and at rest,the door is struck at its center by a handful of sticky mud withmass 0.500 kg, trave ...
Initially (at time t = 0) a particle is moving vertically at 5 m/s and horizontally at 0 m/s. Its horizontal acceleration is 1.6 m/s2. At what time will the particle be traveling at 57? with respect to the horizontal? Th ...
Quesiton: You stand at the top of a deep well. To determine the depth (D) of the well you drop a rock from the top of the well and listen for the splash as the water hits the water†TM s surface. The splash arrives t = ...
Suppose that your user's manual lists your car's weight at 2800 pounds, and you calculate a weight of 2900 pounds based on measurements of the car's tire areas and pressure. What is the percent error between your experim ...
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: You are standing on a skateboard, initially at rest. A friend throws a very heavy ball towards you. You can either catch the object or deflect the object back towards your friend (such that it moves away from y ...
Question: A point charge q1 = +2.40 μC is held stationary at the origin. A second point charge q2 = -4.30 μC moves from point a (x = 0.150 m, y =0) to point b (x = 0.250 m, y = 0.250 m). What is the electric potential ...
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