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An airplane traveling at half the speed of sound emits a sound of frequency 5.45 kHz.
At what frequency does a stationary listener hear the sound after the plane passes?
A 0.458 kg metal cylinder is placed inside the top of a plastic tube, the lower end of which is sealed off by an adjustable plunger, what is the initial acceleration of the metal cylinder
a 600 ton Boeing business jet is flying at 500 mph at a constant altitude of 35,00 ft. what is the lifting force acting on the jet provided by the air
A physics book (mass=3.0 kg) is given a horizontal velocity of 4.0 m/s out the window. Determine the work down by gravity while the book is in between the two windows
q1. a force of 20 n was used to push a box along the floor a distance of 6 m. how much work was done?q2. it
A 100 cm long, 1.2 mm diameter steel guitar string must be tightened to a tension of 1700 N by turning the tuning screws. By how much is the string stretched
Two objects attract each other gravitationally with a force of 2.5 * 10^-10N when they are .25m apart. There total mass is 5.00kg. Find their individual masses
Light of wavelength 730nm falls on two slits and produces an interference pattern in which the fourth-order fringe is 53mm from the central fringe on a screen 3.0m away
A 65-g ice cube at 0°C is placed in 665 g of water at 30°C. What is the final temperature of the mixture? °C, What is the final temperature of the water after the ice has melted
A stone is tied to a string (length = 0.750 m) and whirled in a circle at the same constant speed in two different ways. Determine the speed of the stone
Regarding the Earth and a cloud layer 800 m above the Earth as the "plates" of a capacitor, calculate the capacitance of the Earth-cloud layer system. What is the maximum charge the cloud can hold
A projectile is fired at an upward angle of 45° from the top of a 312 m cliff with a speed of 220 m/s. What will be its speed when it strikes the ground below
Two spaceships approach Mars from the same direction. One has a speed of 0.2c, What is the speed of one spaceship relative to the other
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