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A swimmer crosses a 50 m river in 60 seconds. the river was flowing at an average speed of .35 m/s. how far did she actually swim
A velodrome is built for use in the Olympics. The radius of curvature of the surface is 20.1 m. At what angle should the surface be banked
A man working out in a gym has a metabolic rate of 2500 kJ/h. His body temperature is 37°C, Find at what rate is energy eliminated by evaporation from the lungs
20 kg of water occupy a volume of 1 m^3 in a piston cylinder device at a pressure of 45 bars, Determine the final temperature of the water and Calculate the work and heat involved during this process
Brillouin zones of rectangular lattice. Make a plot of the first two Brillouin zones of a primitive rectangular two-dimensional lattice with axes a, b = 3a.
A wide beam of white light is incident normal to surface of oil film. An observer looking down at film sees green light that has maximum intensity at wavelength 5.2 x 10^-7m, Calculate speed at which light travels in film
In a tape recorder, the magnetic tape moves at a constant linear speed of 5.6 cm/s. What is the angular speed of the take-up spool when it is empty, with radius r1 = 0.64 cm
A helicopter is ascending vertically with a speed of 5.98. At a height of 149 above the Earth, a package is dropped from a window. How long till the package hits ground.
A 0.180-kg yo-yo consists of two solid disks of radius 12.00cm joined together by a massless rod of radius 1.00 cm, Find the acceleration of the yo-yo
An arrow is launched from a height of 1.21 m above the ground with an initial velocity of 48.3 m/s, What will be the maximum height the arrow will reach during its trajectory
A tennis player receives a shot with the ball ( 0.0600kg) traveling horizontally at 50.0 m/s, what is the impulse delivered to the ball by the racket
Two boats, traveling at 5 and 10 kms per hour, head directly each other. They begin at a distance of 20 kms from each other. How far apart are they (in kms) one minute before they collide.
A person starts from rest at the top of a large frictionless spherical surface, and slides into the water below. at what angle does the person leave the surface
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