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You are designing a game for kids. You want to see if the game will require safety goggles. In the game a 15.0 gram ball is to be shot from a spring gun whose spring has a constant force of 650 N/m. The spring will be compressed 5.00 centimeter when is use. Obtain how fast will the ball be moving as it leaves the gun? Find how high will the ball go if the gun is aimed vertically upward?
Three blocks of mass 2.0 kg, 8.0kg, and 15.0 kg are connected by light strings passing over frictionless pulleys. find its acceleration and the tensions in the strings
Light from a laser beam with a wavelength of 600 nm passes through a narrow single slit and observed on a screen 1.5 m behind the slit. The first minimum of the diffraction pattern is 1.5 cm from the central maximum. How wide is the slit?
Your airplane is caught in a brief, violent downdraft. To your amazement, the pretzels on your seatback tray rise vertically, What's the downward acceleration of the plane
A 0.150 T magnetic field B crosses thexy plane perpendicular to the x axis and at anangle of 65.0° to the y axis. A squaresurface with sides of length 7.00 m lies mainly in thexy plane, but a 1.50 m section of it at one end isbent 90° in the negat..
A 20.00kg sled is being pulled across a horzontal surface at a constant velocity. Determine the kinetic frictional force
A magnetic feild has a magnitude of 1.2x10^-3 T, and an electric feild has a magnitude of a 4.6x10^3 N/C. Both feilds point in the same direction. A positive 1.8μC charge moves at a speed of 3.1 x10^6 m/s in a direction that is perpendicular to bo..
A heat pump has a coefficient of performance of 3.75 and operates with a power consumption of 6.89 103 W. How much energy does it extract from the outside air
A 0.185-kg ball is dropped from rest. Ifthe magnitude of the ball's momentum is 0.700 kg · m/s just before it lands on theground, from what height was it dropped
A proton accelerates from rest in a uniform electric field of 620 N/C. At some later time, its speed is 1.16 106 m/s. what is the magnitude of acceleration of the proton
Two cars start from rest at a red stop light. When the light turns green, both cars accelerate forward. What is the total time the blue car is moving
A bucket of mass 2.00 is whirled in a vertical circle of radius 1.45. How fast must the bucket move at the top of the circle so that the rope does not go slack
A cart of mass 1.8kg rolls without friction on a track. At point A the cart is moving at 6.0m/s. What work was done by friction
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