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Derive the equation for centripetal acceleration from the position equations x=Rcostheta and y=Rsin(theta).
in an electrically heated home the temperature of the ground in contact with a concrete basement wall is 12.0 oc. the
A hockey puck is given an initial speed of 5.4m/s. how far does the puck slide before coming to rest
A solid disk of mass m1 = 9.3 kg and radius R = 0.23 m is rotating with a constant angular velocity of ? = 33 rad/s. find the initial angular momentum of the rod and disk system
A sailboat sails 180 km west, then 210 km southeast, and then 280 km at 30° east of north. Find the magnitude and the direction of the last leg of the journey
a rubber ball is shot straight up from the ground with speed v0. simultaneously a second rubber ball at height h
A ball is dropped to the ground from a height of 2m. Thecoefficient of restitution is .6.To what height will the ball rebound
A large oak tree produces 2.2 metric tons of wood over a 50 year growth lifespan. find the tree's efficiency for converting solar energy to wood heating value
A spring has a spring stiffness constant , k, of 440 N/m. How much must the spring be stretched to store 25 J of potential energy. Please tell me the formula and how you arrived at your answer.
A photon of energy 50 MeV moves along the x-axis and Compton scatters with an electron initially at rest. After the collision the resulting photon is observed traveling along the y-axis and the electron has recoiled.
From the top of a tall building, a gun is fired. The bullet leavesthe gun at a speed of 340 m/s, parallel to the ground. As thedrawing shows, the bullet puts a hole in a window of anotherbuilding and hits the wall that faces the window.
a stone is shot from the edge of a cliff 125 m above ground level with an initial speed of 65 ms at an angle of 37
The threshold of dark-adapted (scotopic) vision is 6.0 multiplied by10-11 W/m2 at a central wavelength of500 nm. how many photons per second enter the eye
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