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If the Earth were to suddenly stop revolving around the Sun the gravitational force that the Sun exerts on the Earth would cause the Earth to "fall" directly into the Sun. What would be the speed of the Earth (in megameters per second) the instant it crashed into the Sun?
An m1 = 8.0 kg box lies on a frictionless table, and is attached to a m2 = 5.0 kg box by a light cord passing over a rotating pulley. find the tension in the cord both above and below the pulley
A hot wheels track has a spring loaded launcher. A 100g car is pushed into the launcher, which compresses the spring by 2cm. The cars initial velocity after launching is 3m/s.
A 105 granite cube slides down a 40 frictionless ramp. At the bottom, just as it exits onto a horizontal table, it collides with a 265 steel cube at rest. How high above the table must the granite cube be released to give the steel cube a speed of..
you notice that the image flips when you are 0.500 m from the mirror. Determine the radius of curvature for the mirror
The light energy that falls on a square meter of ground over the course of a typical sunny day is about 20 MJ. The average rate of electric energy consumption in one house is 1.0 kW. Find the energy consumption and area required by the solar cell
A total of 3.04 106 electrons are placed on an initially uncharged wire of length 1.23 m. find the magnitude of the acceleration of a proton
A 2.3 kg box, starting from rest, is pushed up a ramp by a 10 N force parallel to the ramp. The ramp is 2.0 m long and tilted at 17 degrees. How much work does the force do on the system
A metal wire of mass m=24.1 mg can slide with negligible friction on two horizontal parallel rails separated by distance d= 2.56 cm. what is the speed and direction of the wire
Two equal forces are applied to a door. The first force is applied at the midpoint of the door; the second force is applied at the doorknob. Which force exerts the greater torque
Suppose two parallel conducting plates are separated by 0.45 cm of air. Find the maximum potential difference between the two parallel conducting plates in kV
An ambulance traveling at 36 m/s approaches a car heading in the same direction at a speed of 26 m/s. At what frequency does the driver of the car hear the siren
An archer puts a 0.54 kg arrow to the bowstring. An average force of 202 N is exerted to draw the string back 1.3 m. suppose that air resistance is negligible.
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