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A flagpole of length 11 m and mass 23 kg is hinged at one end, where it is connected to a wall. The pole is held up by a cable attached to the other end. Find the tension in the cable.
An unstable elementary particle comes in two varieties, one with positive and one with negative electric charge, What is the difference (R+)-(R-) between the two rates, with its error
An archer shoots an arrow with a velocity of 45.0 m/s at an angle of 50.0° with the horizontal. An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the least initial speed necessary to m..
Compute the x-coordinate of the center of mass XCM. Suppose that the mass of the rod is small enough to be ignored in your calculation. Your answers must be accurate to within 0.1 cm.
if your body has a density of 967 kg/m^3, What fration of you will be submerged when in salt water? the density of salt water is 1025 kg/m^3
The 3.90kg physics book shown is connected by a string to a 474.0g coffee cup. How far does the book slide before it has zero speed
A 9.10 kg board is wedged into a corner and held by a spring at a 50° angle, as the Illustrating shows. The spring has a spring constant of 196 N/m and is parallel to the floor.
A converging lens can be used as a lighter (on a sunny day). If you want to use it to light a match, where should you put the match, What is the radius of the mirror
A charge of -5 micro-coulombs is placed at x = 0 cm, y = 0 cm. Another charge of -5 micro-coulombs is placed at x = +22 cm, y = -50 cm. When measured counter-clockwise from the x axis, what angle is the electric force vector acting on the charge a..
A thundercloud similar to the one described in Example 24.3 produces a lightning bolt that strikes a radio tower. find the effective resistance of the air during the lightning strike
If the slope is not frictionless so that the skier has a final velocity of 6 m/s, compute the force of friction (assuming it is constant), and the coefficient of kinetic friction.
A 1.0-kg ball has a velocity of 12 m/s downward just before it strikes the ground and bounces up with a velocity of 12 m/s upward. What is the change in momentum of the ball
A bottle has a mass of 35.00 g when empty and 98.43 g when filled with water. What is the specific gravity of this other fluid
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