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A two-stage rocket is traveling at 1200 m/s with respect to the earth when the first stage runs out of fuel. Explosive bolts release the first stage and push it backward with a speed of 35 m/s relative to the second stage. The first stage is three times as massive as the second stage.
Evaluate the speed of the second stage after the separation?
Suppose you are planning a trip in which a spacecraft is to travel at a constant velocity for exactly nine months, as measured by a clock on board the spacecraft, and then return home at the same speed. Upon return, the people on earth will have a..
Assume sunlight just outside Earth's atmosphere has an intensity of 1.91 kW/m2. Compute (a)Em and (b)Bm for sunlight there, assuming it to be a plane wave.
A bungee cord can stretch, but it is never compressed. When the distance between the two ends of the cord is less than its unscratched length L0, the cord folds and its tension is zero. Find the tension of the bungee cord when the ball is at its lo..
an axon is the relatively long tail-like part of a neuron or nerve cell. the outer surface of the axon membrane
Two point particles of charge Q1 = 43 µC and Q2 = 89 µC are found to have a potential energy of 38 J. What is the distance between the charges
The first person is initially moving forward with a speed of 2.5m/s and second person is initially at rest. What are the velocities of the two people after the snowball is swapped? Disregard friction between the skate and the ice.
A roller-coaster car moves 205 ft horizontally and then rises 133 ft at an angle of 30° above the horizontal. What is its displacement from its starting point
A transformer with 340 turns in its primary coil and 30 turns in its secondary coil is designed to deliver an average power of 1390 W with a maximum voltage of 67 V
A horizontal circular platform rotates counterclockwise about its axis at the rate of 0.891 rad/s. Calculate the total angular momentum of the system
Two blocks with masses m = 16.7 kg and M = 70.1 kg are not attached. The coefficient of static friction between the blocks is 0.45 but the surface beneath M is frictionless. What is the minimum force F required to hold m against M?
A 3.0-g bullet traveling at 350 m/s hits a tree and slows down uniformly to a stop while penetrating a distance of 12 cm into the tree's trunk. What was the force exerted on the bullet in bringing it to rest
A 70 kg mountain climber dangling in a crevasse stretches a 50-m-long, 1.0-cm-diameter rope by 8.0 cm. What is Young's modulus for the rope
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