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1. What variable could not influence the velocity if it is proposed that the velocity depends on a diameter, a length, gravity, rotational speed, and viscosity? 2. An object falls freely in a viscous fluid. Relate the terminal velocity V to its width w, its length l, gravity g, and the fluid density r and viscosity m. Relate the terminal velocity to the other variables. Select
(a) w, g, and r as the repeating variables and
(b) l, g, and r as the repeating variables.
Show that the relationship for (a) is equivalent to that of (b).
A 5.61 µC and a -2.04 µC charge are placed 19.0 cm apart. Where can a third charge be placed so that it experiences no net force
A certain string can withstand a maximum tension of 36 N without breaking. What is the speed of the stone as the string breaks
A boy of mass 48.3 kg is initially on a skateboard of mass 2.00 kg, moving at a speed of 10.3 m/s. Find the final velocity of the skateboard
A canoe is paddled downstream with a speed of 1.9m/s relativeto the water. The river current has an average speed of 1.6m/s. Determine the fly's velocity relative to the river banks
Water at a gauge pressure of P = 4.8 atm at street level flows into an office building at a speed of 0.98m/sthrough a pipe 5.6 cm in diameter. Calculate the gauge pressure in the pipe on the top floor
An unstable atomic nucleus of mass 1.62x^10-26 kg initially at rest disintegrates into three particles. One of the particles, of mass 5.02x10^-27 kg, moves in the y direction with a speed of 6.00x10^6 m/s. Another particle, of mass 8.44x10^-27 kg,..
A car accelerates uniformly from rest to a speed of 60.0 mi/h in 11.0 s. Find the constant acceleration of the car. Find the distance the car travels through this time.
An all-electric car (not a hybrid) is designed to run from a bank of 12.0-V batteries with total energy storage of 2.10 x 107 J. How far can the car travel before it is "out of juice"
The siren in an ambulance has a frequency (according to you) of 1095 Hz as it moves toward you at speed v. What is the final speed v of the siren
A police investigator measures straight skid marks 29.0 m long in an accident investigation. Assuming a friction force and car mass the same as in the problem above, what was the minimum speed of the car when the brakes locked
A bird flies 3.6km due west and then flies 1.2km due north, What is the angle between the net displacement vectors of the 2 birds
The mass of the H2 molecule is 3.3x10-24 g. If 1023 hydrogen molecules per second strike 2.0 cm2 of wall at an angle of 45° with the normal when moving a speed of 105 cm/s
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