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What is the acceleration of a race car if its speed is increased uniformly from 44.0m/s to 66.0m/s over an 11.0s period.
You throw a ball vertically upward at 27.0 m/s, and then catch it at the same height you released it. Ignoring air resistance, how high did the ball rise
A ranger in a national park is driving at 28.0 mi/h when a deer jumps into the road 225 ft ahead of the vehicle. After a reaction time t, the ranger applies the brakes to produce an acceleration of a = -9.00 ft/s2. What is the most reaction time a..
Two equal piano wires have a fundamental frequency of 600 Hertz when kept under the same tension. Obtain what fractional increase in the tension of one wire
The work function of an element is 3.2 eV. Photons of a certain energy are found to eject electrons with a kinetic energy of 2 eV. What is the speed of the ejected electrons
The distance to a star is approximately 4.2e18 m. If this star were to burn out today, in how many years would we see it disappear, How long does it take for sunlight to reach Jupiter
A charge of - 0.580uC exerts an upward force of magnitude 0.170N on an unknown charge which is a distance of 0.300m directly below it. What is the unknown charge
If the detector moves toward the source, vd is positive; if the source moves toward the detector, vs is positive. What frequence is detected by a stationary train
The step-down transformer in a local neighborhood reduces the voltage from a 7,200 V line to 120 V. What are the power input and output
A child's top is held in place, upright on a frictionless surface. The axle has a radius of r= 2.21 mm. Two strings are wrapped around the axle, How much angular momentum does the top acquire
A rock of mass 32kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 274N. What is the magnitude of the acceleration of the rock.
An undiscovered planet, many lightyears from Earth, has one moon in a periodic orbit. calculate the moon\'s radial acceleration
An ideal gas in a piston is placed in a refrigerator, which removes 686 J of energy from the gas via cooling. find the net change in the internal energy of the gas in the piston
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