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You access the roof of a building and throw a ball to the ground with an initial velocity of 12.0 m/s at an angle of 25.0° below the horizontal. The building's roof is 28.0 m above the level ground.
(a) At what time does the ball hit the ground?
(b) At what horizontal distance does the ball hit the ground?
A race car starts from rest on a circular track of radius 437 m. The car's speed increases at the constant rate of 0.560 m/s2. calculate the speed of the race car
A child is floating stationary in a inner tube in a swimming pool. the childs mass is 32 kg. What is the volume of the inner tube
Let the angle of incidence be 70° and the transmitted region be diamond with n2 = 2.42
A car is going with a constant speed of 15 m/s (about 34 mph) in a school-crossing corner, where the speed limit is 10 m/s (about 22 mph). What is the distance traveled at that point
A 45.0kg girl is standing on a 170 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.53m/s relative to the plank.
The position of an object connected to a spring varies with time according to the expression x = (5.7 cm) sin(6.8?t). Find the period of this motion
A microscope has an objective lens with a focal length of 16.22 mm and an eyepiece with a focal length of 9.76 mm. what is the actual diameter of the red blood cell
A ball of mass 20 kg moves with a velocity of 2 m/s along the +x axis (call it ball A). It collides with a ball of mass 12 kg which is initially at rest (call it B), What is the final velocity of ball B
A plate of glass with parallel faces having a refractive index of 1.57 is resting on the surface of water in tank. A ray of light coming from above in air makes an angle of incidence 34.5 degrees with normal to the top surface of the glass.
A position-time graph for an object moving in the - dir'n and accelerating from a low velocity to a high velocity is shown below. If the object is moving in the - dir'n, then the slope of a p-t graph would be -. If the object is changing velocity fro..
q1. for years marine scientists were mystified by sound waves picked up by underwater microphones in the pacific ocean.
A boat has a mass of 4710 kg. Its engines generate a drive force of 3610 N due west, What is the boat's acceleration, with correct sign
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