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a wheel of perimeter 220 cm rolls on a level road at a speed of 9 km/hr how many revolutions does the wheel make per second.
A crate is dragged 4.0m along a rough floor with a constant velocity by a worker applying a force of 450N to a rope at an angle of 30? to the horizontal
A K0 particle at rest decays into a ?+ and a ??. The mass of the K0 is 497.7 MeV/c2 and the mass of each pion is 139.6 MeV/c2. What will be the speed of each of the pions
A hiker's trip consists of three segments. Path A is 8km long heading 65 degrees north of east. Path B is 7km long in a direction due east. Path C is 4.0 km long heading 313 degrees counter clockwise from east.
The electric field at 0.50 m away from the center of a thin metallic spherical shell of radius 0.30 m is - 400×10^3 V/m. the charge density at the outer surface of the sphere is:
Water at the top of Niagara Fallshas a temperature of 8.0°C. calculate the increase in temperature of the water at the bottomof the falls
A cart of mass m = 1.4 kg is released from the top of a ramp sloped ? = 13° relative to the horizontal. The length of the ramp is L =9.6 m. find the car's Kinetic Energy at the bottom of the ramp
An electron and a positron, each moving at3.0×105m/s, collide head on, disappear, Determine the momentum of each photon
Two metal spheres are separated by a distance of 0.8 cm and a power supply maintains a constant potential difference of 770 V between them. what is the distance between the spheres at this time
Satellite orbits the earth at a distance equal to twice the earth's radius above the surface of the earth (the total distance from the center of the earth is three times the radius of the earth).
A parallel-plate air capacitor has a capacitance of 500 pF and a charge of magnitude 0.150 mu C on each plate. What is the surface charge density on each plate
Airplane one flies due east at 250 km/h relative to the ground. What is the velocity of airplane one relative to airplane two
Another particle, of mass 7.4 10-27 kg, moves along the positive x-axis with a speed of 4.0 106 m/s. (Assume that mass is conserved.) Evaluate the third particle's speed. What is the direction of motion?
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