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A large pendulum with a 200-lb gold-plated bob 12 inches in diameter is on display in the lobby of the United Nations building. The pendulum has a length of 75 feet. It is used to show the rotation of the Earth-for this reason it is referred to as a Foucault pendulum. Find what is the least amount of time it takes for the bob to swing from a position of maximum displacement to the equilibrium position of the pendulum? (Suppose that the acceleration due to gravity is g = 9.81 m/s² at the UN building.)
Four equal charges, q=4.35C, of mass m 4.35kg are at the corner of a square of side L=0.0237m. If an equivalent charge of the same mass is placed at the origin, what is its speed at any time after it is released
A 75 kilogram stunt boy jumps from a balcony and falls 25 meter before colliding with a pile of mattresses. find the average force exerted by the mattresses on the stunt boy
The nucleus of 8Be, which consists of 4 protons and 4 neutrons, is very unstable and spontaneous breaks into two alpha particles, what is the force between the two alpha particles when they are 7.00 x 10^-15 m apart
An experiment you're designing needs a gas with = 1.60. You recall from your physics class that no individual gas has this value, but it occurs to you that you could produce a gas with = 1.60 by mixing together a monatomic gas and a diatomic gas.
A partly full paint can has 0.68 U.S.gallons of paint left in it. What is the volume of the paint in cubicmeters?
The minute hand of a wall clock measures 14 cm from its tip to the axis about which it rotates. The magnitude and angle of the displacement vector of the tip are to be determined for three time intervals.
An aluminium baseball bat has a length of 0.87 m at a temperature of 21°C. When the temperature of the bat is raised, the bat lengthens by 0.00016 m. Decide the final temperature of the bat.
part 1 rc circuit 5 identical resistors with resistance r are connected in series while 5 identical capacitors with
a hockey puck leaves a player's stick with a speed of 9.9m/s and slides 32.0 m before coming to rest. Find the coefficient of friction between the puck and the ice
A boy is attempting to swim directly across a river; he is able to swim at a speed of 0.421 m/s relative to the water. The river is 2.48 m wide and the boy ends up at 4.77 m downstream from his starting point.
A 60 kg crate is lowered using arope over a fixed support. The rope exerts a constant upward forceof 500 N.? How fast is the crate traveling when it hits the floor
A 20kg ball is moving at 10 m/s in the positive direction of the x axis when it collides with a 10kg ball initially at rest. calculate the speed of both balls after the collision
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