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Two mirrors form a vertex with an angle of 128°. If a ray of light strikes mirror 1 with an angle of incidence of 48°, find the angle of reflection of the ray when it leaves mirror 2.
What is the magnitude of the acceleration of a modified At wood machine if the mass of the cart is 3 kg and the hanging mass is 4 kg
How high from the surface of the earth must an object be raised, What minimum speed is needed by the object to ascend to this height
What must the charge (sign and magnitude) of a particle of mass 1.42g be for it to remain stationary when placed in a downward-directed electric field of magnitude 610N/C ? Use 9.81m/s^2 for the magnitude
A rescue helicopter lifts a 85.3-kg person straight up by means of a cable. calculate how much work done by the persons weight
A 68-kg base runner begins his slide into second base when he is moving at a speed of 4.2 m/s. How far does he slide
A solenoid with a cross-sectional area of 1.70*10^-3 is 0.735m long and has 485 turns per meter. Find the magnitude of induced emf in this solenoid
a car is moving down a street at 55 kmh. a child suddenly runs into the street. if it takes the driver 0.75 s to react
A block with a mass of 0.148 kg is traveling at 8.4 m/s on a horizontal, frictionless surface when it hits a spring with a spring constant of 722 N/m. What is the maximum amount the spring is compressed
4.10g of nitrogen gas at 20.0 C and an initial pressure of 2.70 atm undergo an isobaric expansion until the volume has tripled. The gas pressure is then decreased at constant volume until the original temperature is reached. What is the gas pressur..
A feather is dropped on the moon from a height of 1.40 meters. find the time for the feather to fall to the surface of the moon
The hydrogen bomb detonated in 1954 had an explosive power equal to about 15 megatons of TNT, How many times more explosive was the hydrogen bomb
When a 19.6 kg wheel with an angular speed of 2.20 rad/s is disconnected from a motor, a 0.238 N · m frictional torque slows the wheel to a stop. how long will it take for the wheel to come to rest
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