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A uniform 6-m ladder weighs 200 N. The ladder leans against a frictionless wall at an angle 650 to the floor. Discover the forces on the ladder from the wall and the floor.
An air bubble is expelled by an underwater diver at a depth of 17.2 m. As the bubble rises to the surface, the pressure decreases and the volume of the bubble therefore increase. The temperature of the water is constant. Find the final volume of bubb..
One charged particle of -1.3 × 10-6 C is moving north with a velocity of 5 × 106 m/s. What force is exerted between the particles
an audience of 1800 fills a concert hall of volume 2.2times104 m3.if there were no ventilation by how much would the
A sky diver jumps out of a plane and falls freely for 7.8 seconds before opening the parachute. What is the sky diver's speed when the parachute opens
In a game of pool, a cue ball with an initial velocity of 1.25 m/s directed to the right (along the +x-axis) collides with the five ball, Find the cue ball's final velocity
Three identical point charges each of charge q are located at the vertices of an equilateral triangle, Find a symbolic expression for the electric potential at the center of the triangle
The position function x(t) of a particle moving along an x axis is x = 4.0 - 4.5t2, with x in meters and t in seconds. 1) At what negative time does the particle pass through the origin? 2) At what positive time does the particle pass through the ..
Using energy considerations, compute the average force the beam exerts on the pile driver while the pile driver is brought to rest.
The 4 tires of a car are inflated to a gauge pressure of 2.3 105 Pa. Each and every tire has an area of 0.021 m2 in contact with the surface. Compute the weight of the car
question1a neutron star has a mass of 2.0 1030 kg about mass of our sun and a radius of 5.4 103 m about the height of a
Every year, there is a foot race to the top of the Empire State Building. what was his average power output during the race
when the sun is directly overhead a hawk dives toward the ground with a constant velocity of 5.10 ms at 67.0deg below
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