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A string is attached to a cube of plastic of volume V = 0.450 m3 that is placed in oil with density 900 kg/m3, as shown in the figure. The tension in the string, T, is 160 N. What is the density of the plastic cube?
A car m = 2500 kg is traveling at a constant speed of v = 33 m/s. The car experiences a drag force (air resistance) of Fd = 250 N. What is the power in horsepower
A relief airplane is delivering a food package to a group of people stranded on a very small island. After a package is ejected from the plane, how long will it take for it to reach sea level from the time it is ejected
You want to take a full-length photo of your friend who is 1.94m tall, using a 35.0mm camera having a 50.0mm lens, How far is the lens from the film
Suppose a tank contains 737 m3 of neon (Ne) at an absolute pressure of 1.01 105 Pa, What is the increase in the internal energy of the neon
A thin, flat washer is a disk with an outer diameter of 14 cm and a hole in the center with a diameter of 3 cm. What is the electric field on the axis of the washer
Which of the following devices uses total internal reflection function?
Your roommate is working on his bicycle and has the bike upside down. He spins the 56.0cm -diameter wheel, What is the pebble's acceleration
A ladder 2.30 m long, weighing 226 N, initially lies flat on the ground. The ladder is raised to a vertical position. Compute the work done by the force lifting the ladder
Purley decelerated from 173 km/h to zero in a distance of only about 0.66m. Calculate the magnitude of the acceleration experienced by Purley
A red laser, with a wavelength of 640 nm, shines on a diffraction grating with a grating spacing of 500 lines/mm. The resulting diffraction pattern is observed on a screen 1.00 meters away from the grating.
A car moving at 25m/s approaches a stationary whistle that emits a 350Hz sound. The speed of sound in the air is 343m/s, what is the frequency of sound heard by the driver of the car
Two converging lenses having focal lengths of f1 = 11.1 cm and f2 = 20.0 cm are placed d = 50.0 cm apart, The final image is to be located between the lenses, at the position x = 28.3 cm.
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