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A 0.060 kg tennis ball, moving with a speedof 4.50m/s, has a head-on collision with a 0.090 kg ball initially moving in the same direction at a speed of 3.00m/s.
Assuming a perfectly elastic collison, determine the speed and direction of each ball after the collision?
a parallel-plate capacitor with air between the plates is connected across a voltage source. this source establishes a
A boat moves through the water of a river at 10-m/s relative to the water, regardless of the boat's direction. If the water in the river is flowing at 1.6-m/s.
During exercise, a person may give off 182 kcal of heat in 30 min by evaporation of water from the skin. How much water has been lost
A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 29.7 dB. The hearing aid picks up sound having a frequency of 250 Hz at an intensity of 3.10 10-11 W/m2. What is intensity delivered to t..
A block with mass m1 = 9.4 kg is on an incline with an angle ? = 24.0° with respect to the horizontal. For the first question there is no friction, but for the rest of this problem the coefficients of friction are: ?k = 0.23 and ?s = 0.253. 1) When t..
Consider the circuit Take = 6.00 V, L = 8.00 mH, and R = 4.00. What is the inductive time constant of the circuit
Two energy reservoirs are at 20 degrees Celsius and 827 degrees Celsius. How much energy does this engine extract from the hot reservoir to do 3500 J of work
A 10-inch telescope is used to determine if what appears to be one star is actually two stars. Stars are so far away that they are essentially point sources. How close, in angle, can two stars be and still be resolved by this telescope? Use a wave..
A horizontal 797N merry-go-round is a solid disk of radius 1.53 m, started from rest by a steady horizontal force of 50.4 N applied tangentially to the edge of disk. Determine the kinetic energy of the disk after 3.06 s.
A 60kg person walks on a 100kg log at therate of 0.80m/s (with respect to he log). With what speed does the log move
An air track is tilted so that it makes a small angle with the horizontal. What is the magnitude of the acceleration for the air cart
The wire is cut at point P. Will the potential difference between points A and B increase, decrease, or remain the same? Give reason for.
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