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A car is moving with constant velocity v, and has wheels of radius R. The car drives over a clump of mud and the mud with mass m sticks to the wheel with an adhesive force of f perpendicular to the surface of wheel. At what angle does the piece of mud drop off the wheel?
a jet cruising at 26400 feet descends 96 miles away from a jet cruising at 31680 feet which is 120 miles from logan
When cruising at 75 MPH on a highway, a car's engine develops 45 hp. The car's engine has a thermodynamic efficiency of 25% and 1 gallon of gasoline has an energy content of 1.3 × 108 J. How many gallons of gasoline are consumed each second
A block is hung by a string from the inside roof of a van. When thevan goes straight ahead at a speed of 20 m/s, the block hangsvertically down.
A massless spring hangs from the ceiling with a small object attached to its lower end. How far below yi is the new equilibrium (rest) position with both objects attached to the spring
In fair weather, over flat ground, there may be a downward electric field of 125 N/C. find the total charge on the Earth and the charge per unit area
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the mass of the star
Two concentric metal spheres are found to have a potential difference of 776.0 V when a charge of 3.026·10-8 C is applied to them. What is the radius of the inner sphere
A carnot heat engine operates between reservoirs at temperatures of 864 K and 297 K. In one cycle it absorbs 1,405 J heat. How much work is done by the engine
A doubly charged helium atom, whose mass is 6.6*10^-27 kg, is accelerated by a voltage of 3000 V. What will be its radius of curvature in a uniform 0.300 T field
The angular acceleration of a wheel is ? = 5.0t4 – 3.0t2, with ? in radians per second-squared and t in seconds. At time t = 0, the wheel has an angular velocity of +7.0 rad/s and an angular position of +4.0 rad. Write expressions for (a) the angular..
A particle of rest mass 1.10 MeV/c2 and kinetic energy 2.10 MeV collides with a stationary particle of rest mass 2.80 MeV/c2. Find the speed of the first particle before the collision
A horizontal force of 12 N pushes a .5 kg book against a vertical wall. The book is initally at rest. compute the magnitude of the frictional force
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