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A hovercraft of mass 69.0 kg can move on a horizontal surface, the x-y plane. A single unbalanced force acts on the hovercraft, but the size of the force is unknown. The hovercraft initially has a velocity of 4.0 m/s in the positive x direction and some time later has a velocity of 7.0 m/s in the positive y direction. How much work is done on the hovercraft by the force during this time?
A 750g aluminum pan is removed from the stove and plunged into a sink filled with 10.0kg of water at 20.0C. What was the initial temperature of the pan
define the speed with which the cart reaches positions 3, 2, and 1 (in that order). Neglect friction. Let g = 9.81 m/s2.
A horizontal 790-N merry-go-round of radius 1.60 m is started from rest by a constant horizontal force of 55 N applied tangentially to the merry-go-round
What is direction of the velocity of the canoe
A 20.0- rock is sliding on a rough, horizontal surface at 8.00 and eventually stops due to friction. What is the total work they do on the supertanker
Here is a simple heat engine: Start with 20 moles of monatomic gas, occupying 0.50 m3 of volume at 400 K. Calculate the temperature at the end of each process
A banked circular highway curve is designed for traffic moving at 77-km/h. The radius of the curve is 153 m. Traffic is moving along the highway at 46-km/h on a rainy day. What is the minimum coefficient of friction between tires and road that wil..
What is the speed and momentum of a proton with kinetic energy 500 MeV, What is the de Broglie wavelengeth of the proton
Two small plastic spheres are given positive electrical charges. When they are 17.0{\rm cm} apart, the repulsive force between them has magnitude 0.200{\rm N} . 1.What is the charge on each sphere if the two charges are equal? 2.What is the charge..
Using Ampère's law, calculate the magnetic field inside and outside of a toroidal coil with a radius of 25 cm
How fast should the platform move, v_p, for the person to detect a beat frequency of 7.00 Hz ? Take the speed of sound to be 344 m/s. Express your answer numerically in meters per second.
Three parallel wire 5 m long carry each 24 A of current in the same direction. Find the magnitude force on each wire
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