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A copper block is removed from a 300° C oven and dropped into 1.00 liter of water at 20° C. The water quickly reaches 25.5° C and stays at that temperature. What is the mass of the copper block?
A quarterback throws a pass that is a perfect spiral. In other words, the football does not wobble, how many revolutions has the ball made while in the air
A steel ball of mass 0.400 kg is fastened to a cord that is 80.0 cm long and fixed at the far end. The ball is then released when the cord is horizontal. At the bottom of its path, the ball strikes a 3.00 kg steel block initially at rest on a fric..
A stopping car comes to a skidding stop after 5 m. If the road exerts a force of 600 N opposite to the direction of the motion: how much work does the road do on the car
What must be the orbital speed of a satellite in a circular orbit 800 above the surface of the earth
A pile driver falls through a distance of 1.75m before hitting a pile. Find the velocity of the driver as it hits the pile
A 0.25 kg stone attached to a 0.8 m long string is rotated in a horizontal plane. The string makes an angle of 17° with the horizontal. Determine the speed of the stone
a .40-kg bucket of bait, attached to the end of a .75 m string, is whirled around in a circular horizontal path. What is the speed of the bucket
A 206 n sign hangs from the end of a 3.30 m long bar. find the two forces exerted by bolts A and B
A disk of radius R has a uniform surface charge σ on one side. A circular hole of radius R/2 is now cut in the center of the disk. What is the electric field at the center of the hole
A playground merry-go-round of radius R = 2.20 m has a moment of inertia I = 235 kg · m2, What is the new angular speed of the merry-go-round
An uncharged nonconductive hollow sphere of radius 11.0 cm surrounds a 16.0 µC charge located at the origin of a cartesian coordinate system. A drill with a radius of 1.00 mm is aligned along the z axis, and a hole is drilled in the sphere. Calculate..
A stunt man whose mass is 70kg swings from the end of a 4.50m long rope along the arc of a vertical circle. Assume that he starts from rest when the rope is horizontal, find the tensions in the rope that are required to make him follow his circula..
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