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1. After your sports car breakdown, you start to push it to the nearest repair shop. While the car is starting to move how the force does you exert on the car compare to the force the car exerts on you? How do these forces compare when you are pushing the car along at a constant speed?
2. Suppose a gliding bird is caught in an updraft so that it ascends at a steady rate, in this situation, which has greater magnitude; the force of gravity or the upward force of the air on the bird
A solid sphere has a temperature of 768 K. The sphere is melteddown and recast into a cube that has the same emissivity and emitsthe same radiant power as the sphere. What is the cube'stemperature in kelvins?
A stone is dropped at t = 0. A second stone, with 6 times the mass of the first, is dropped from the same point at t = 56 ms. How fast is the center of mass of the two-stone system
Find the flux of the Earth's magnetic field of magnitude 5x10^-5, through a square loop of area 10cm^2 for the following
From her police car running at 70 mi/h, officer K sends a radar signal of a 28.5 mm wavelength to an SUV in front of her. What is the speed of the SUV [in mi/h]
White light containing wavelengths from 405 nm to 760 nm falls on a grating with 8000 lines/cm. How wide is the first-order spectrum on a screen 2.20m away.
Three polarizing plates whose planes are parallel are centered on a common axis. The directions of the transmission axes relative to common vertical direction.
The largest-caliber antiaircraft gun operated by the German air force during World War II was the 12.8 cm Flak 40. What propulsive force was necessary to attain the muzzle speed
The speed of a 2.0 kilogram object changes from 30 m/s to 40 m/s during a 5.0-sec time interval. Evaluate the magnitude of the average total force acting on object during this time interval
If the radius of the equipotential surface of a point charge is 21.0m and is at a potential of +3.50kv
A sphere of radius a in free space is nonuniformly charged over its surface such that the charge desity is given by ps(theta)=ps0*sin(2theta), Compute the total charge of the sphere
A uniform disk with a mass of 775 g and radius 17.0 cm is rotating on frictionless bearings with an rotational speed of 18.0 Hz, What is the new rotational speed of the disk
An automobile can be considered to be mounted on four identicalsprings as far as vertical oscillations are concerned. The springsof a certain car are adjusted so that the oscillations have afrequency of 2.62 Hz.
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