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A swimmer looks upward from the bottom of a 3.0-m-deep swimming pool. The end of the diving board is directly above him, 2.5m above the waters surface. How far from the swimmer does the board appear to be?
An m=8.25 Kg mass is suspended on a string that is pulled upward by the force of F=83.3 N. If the upward velocity of the mass is 3.25 m/s right now, what is the velocity 5.50 s later.
A plastic bag is filled with hydrogen at atmospheric pressure and 23.0 oC. what is the required volume of the balloon if the air inside can be maintained at 43.0 oC
A thin metallic spherical shell of radius 42.6 cm has a total charge of 6.95, What is the electric field at a distance of 14.4 cm from the center of the spherical shell
A 180 g top spinning at 14 rev/s makes an angle of 30° to the vertical and precesses at a rate of 1 rev per 8.0 s. what is the moment of inertia of the top
A wheel rotating about a fixed axis has an angular position given by q = 3- 2.0t3, where q is measured in radians and t in seconds. What is angular acceleration of the wheel at t = 2.00s.
When a 6.0 µF capacitor is connected to a generator whose rms output is 30 V, What is the frequency of the source
A thin spherical shell rolls down an incline without slipping. what is the angle the incline makes with the horizontal
A race car starting from rest accelerates at a constant rate of 6.50 m/s2. What is the velocity of the car
A small postage stamp is placed in front of a concave mirror (radius = 1.1 m), such that the image distance equals the object distance. (a) What is the object distance
A point charge is moved in an electric field. The potential changes from -87 V to +30 V between the initial and final position. The work done by the electric field is 156 J
Demonstrating the low melting point of Gallium metal (29.8°C), an instructor removes a 1.00 kg sample of the metal from a container at room temperature (20.0°C) and places it onto the palm of his hand.
Suppose you loft a ball in a tennis game with an initial speed of 16.5 m/s at an angle of 52.0 degrees above the horizontal. With what minimum average speed must he move
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