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1. A ball is dropped from a hot air balloon that is accelerating upward at 10 ft/sec2. What is the acceleration of the ball upon its release?
questiona.if puck has a radius of 2 cm what is the ratio of angular to linear velocity for which kinetic energy of
A small rubber wheel on the shaft of a bicycle generator presses against the bike tire, What is the peak emf produced by the generator at the end of 4.64 s
The cubit is an ancient unit. Its length equals six palms. (A palm varies from 2.50 to 3.50 inches depending on the individual.) We are told Noah's ark was 300 cubits long, 50 cubits wide and 30 cubits high.
A 100-turn square wire coil of area 0.04m2 rotates about a vertical axis at 1500 rev/min, as indicated. The horizontal component of the Earth's magnetic field at the location of the loop is 2.0 × 10-5 T. compute the maximum emf induced in the coil..
A comet moves about the Sun in an elliptical orbit, with its closest approach to the Sun being about 0.680 AU and its greatest distance from the sun being 38.5 AU. what is its speed when it is farthest from the Sun
Two small metal spheres with masses 2.0 {rm g} and 4.0 {rm g} are tied together by a 5.3-{rm cm}-long massless string and are at rest on a frictionless surface. Each is charged to +2.3 mu C. What is the energy.
Using the Bohr model, calculate the speed of the electron in a hydrogen atom in the n=1,2, and 3 levels. Calculate the orbital period in each of these levels
A birds travels at 1.4 m/s with a fish in its claws, at 15 degrees below the horizontal. If it drops the fish that takes 1.8 seconds to land on the ground
An MRI technician moves his hand from a region of very low magnetic field strength into an MRI scanner's 2.00-T field with his fingers pointing in the direction of the field.
A sheet of glass is coated with a 496 nm thick layer of oil (n = 1.42). What is the color of the most part of transmitted light
By holding a magnifying glass 35cm from your desk lamp, you can focus an image of the lamp's bulb on a wall 1.8m from the lamp
An electron is confined in a 2.00nm box. What are it's three lowest energy levels? What wavelength photon would be emitted during an n=3 to n=1 transition
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