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Tectonic plates are large segments of the Earth's crust that move slowly. Suppose one such plate has an average speed of 4.8 cm per year. (a) What distance does it move in 50 seconds at this speed? m (b) What is its speed in miles per million years?
A Cessna aircraft has a liftoff speed of 120 km/h. How long does it take the aircraft to become airborne
A crate of mass 45.0 kg is being transported on the flatbed of a pickup truck. The truck accelerates forward on level ground. What is the maximum acceleration the truck can have
An infinite conducting sheet lies in the xy plane. It has a width of 4.5 cm and a current density of 5200 A/m^2 in the negative direction. what is the direction of the force on the electron
The attractive electrostatic force between the point charges 7.35x10^-6C and Q has a magnitude of 0.400N when the separation between the charges is 2.92m. Find the sign and magnitude of the charge Q.
The average lifetime of a pi meson in its own frame of reference (i.e., the proper lifetime) is 2.6 10-8 s. What distance would it travel if time dilation did not occur
A uniform electric field of magnitude 230 V/m is directed in the positive xdirection. A +15.0 µC charge moves from the origin to thepoint (x, y) = (20.0 cm, 50.0 cm). What is the change in the potential energyof the charge field system?
A 6kg object moving 2m/s in the positive x direction has a one-dimensional elastic collision with a 4kg object moving 3m/s in the opposite direction
A man is doing push-ups. He has a mass of 68 kg and his center of gravity is located at a horizontal distance of 0.70 m from his palms and 1.00 m from his feet. Find the forces exerted by the floor on his palms and feet
Overnight, 5.3 kilograms of dew forms on one square meter of grass-covered land at 5 °C. The latent heat of condensation is 2500 kJ/kg. How much heat is released?
A cyclotron operates with a given magnetic field and at agiven frequency. If R denotes the radius of the final orbit, the final particle energy is proportional to 1/R. A cyclotron operates with a given magnetic field and at agiven frequency. If R ..
A 5 kg mass attached to a horizontal spring is pulled from its equilibrium position by 3 m and let go. what is the maximum velocity of the mass
The largest moon of Pluto, Charon, was discovered in 1979. Charon is in a circular orbit of radius 19,600 km around Pluto, What is the total mass of the Pluto-Charon system
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