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An automobile tire is rated to last for 35,000 miles. To an order of magnitude, find through how many revolutions will it turn?
A 45.0 resistor, a 0.100 H inductor, and a 10.0 µF capacitor are connected in series to a 60.0 Hz source. The rms current in the circuit is 2.55 A. Find the rms voltages across the inductor
A helicopter lifts a 81 kg astronaut 17 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. How much work is done on the astronaut by the force from the helicopter?
A 2.0-kg cart is rolling along a frictionless, horizontal track towards a 1.0-kg cart that is held initially at rest. find the total momentum of the system of the two carts
A plane is headed eastward at a speed of 156 m/s. A 20.0 m/s wind is blowing southward at the same time as the plane is flying. what is The velocity of the plane relative to the ground
when the wavelength of an incident radiation exceeds 560nm the emission of photoelectrons from a surface ceases. what
A single loop of wire with an area of 9.05×10?2 m2 is in a uniform magnetic field that has an initial value of 3.69 T , find the current induced in the loop
A projectile is fired at v0 = 420.0 m/s at an angle of ? = 67.2o with respect to the horizontal. Assume that air friction will shorten the range by 30.1%. How far will the projectile travel in the horizontal direction, R?
an object of mass m attached to a spring of force constant k oscillates with simple harmonic motion. the maximum
A mountain climber jumps a 2.9 m widecrevasse by leaping horizontally with a speed of 7.3 m/s. Where does the climber land
You and a friend are sitting in the bleachers of a major league baseball park, 120 m from home plate on a day when the temperature is 20° C. How much later does the other person hear the sound
A simple camera telephoto lens consists of two lenses. The objective lens has a focal length f1 = +44.0 cm. How far behind the concave lens should the film be placed
a 0.400 ice puck moving east with a speed of 2.50 has a head-on collision with a 0.900puck initially at rest. what
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