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A 1000-kilogram race car is traveling at 60 m/s around a curved section of track that has a radius of 300 m. What is the car's centripetal acceleration? What is the centripetal force that acts on the car?
A 6.4kg ball, hanging from the ceiling by a light wire 135cm long, is struck in an elastic collision by a 1.80 ball moving horizontally at 4.20 m/s just before the collision. Find the tension in the wire just after the collision.
Find an equation for the change in wavelength of a scattered photon by Compton effect.
Does the change in speed of the downward-moving rock agree with the magnitude of the speed change of the rock moving upward between the same elevations? Explain physically why it does or does not agree.
Two charged spheres are 8.45 cm apart. They are moved and the force on each of them is found to have been tripled. How far apart are they now.
A point charge +6.7 uC is placed at the origin, and a second charge -3.6 uC is placed in the X - Y plane at (0.40 m , 0.55 m ). Where should a third charge be placed in the plane so that the net force acting on it is zero? Express your answers usi..
Find out ratio of the detector
Find the average magnitude of the induced emf if the change. The magnitude of the charge on a parallel plate capacitor is 4uC and the potential difference between the plates is 80V. What is the capacitance of this capacitor.
illustrate a diagram to show the forces acting on the aircraft while it is flying in a horizontal circle with its wing banked at an angle to horizontal.
If the light from the spotlight strikes the mirror at an angle to the normal, what angle to the normal would you expect for the reflected rays.
An engineer is designing a pacemaker for cardiac patients. For the 20 year old woman, how many times must device have to beat for her to have a normal life expectancy.
An 800-N man stands halfway up a 5 m long ladder of negligible weight. The base of the ladder is 3 m from the wall as shown. suppose that the wall-ladder contact is frictionless, wall pushes against the ladder with a force of what magnitude.
Suppose that the sound level of a conversation is initially at an angry 70 dB and then drops to a soothing 50 dB. Assuming that the frequency of the sound is 500 Hz, determine the (c) initial and (d) final sound wave amplitudes.
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