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In a performance test, each of two cars takes 8.0 s to acceleratefrom rest to 28 m/s. Car A has a mass of 1429 kg, and car B has amass of 1876 kg. Find the net average force that acts on(a) car A and (b) car B duringthe test.
Write an expression for the electric field vector of a uniform plane wave in free space that is propagating in the direction given by a line from the origin to the point (3,0,4), Compute the irradiance of this wave
A football is kicked at ground level with a speed of 40 m/s at an angle of 32.0 degrees to the horizontal. How much later does it hit the ground
A bob (small ball) is attached to the lower end of a cord that is attached to the cieling and moves in a horizontal circle at a constant speed. (The cord sweeps out a cone as the bob rotates.) The bob has a mass of 0.040 kg, the cord has a length ..
A projectile is launched from 1.5 m above the ground at some angle theta. what was its initial velocity and the angle of projection theta
An astronaut travels to Mars with a speed of 8400 m/s. After 1 month (30.0 days) of travel, as measured by clocks on Earth, how much difference is there between the Earth clock and the spaceship clock? Give your answer in seconds.
A 9 V battery is rated at 80 Ah. It can deliver a current of 80 A for one hour, or a current of 40 A for 2 hours, etc. What is the total energy stored in the battery
What is least value for which stick remain in equilibrium
Temperatures are often measured with electrical resistance thermometers. Suppose that the resistance of such a resistance thermometer is 162 when its temperature is 16.0 °C. What is the temperature of the liquid
An airplane traveling at half the speed of sound emits a sound of frequency 5.96 kHz. At what frequency does a stationary listener hear the sound as the plane approaches
A 50 Newton horizontal force pushes a 10 kilogram mass sitting on a horizontal surface towards the right. What is the acceleration of the mass and its direction
"Fat Man," the atomic bomb dropped on Nagasaki at the end of World War II released approximately 88 x 10^12 J of explosive energy
The springs of a 1800kg car compress 5.4mmwhen its 64kg driver gets into the driver's seat.If the car goes over a bump, what will be the frequency of oscillations
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