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A loudspeaker of mass 18.0 is suspended a distance of = 2.20 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 3.10 .What is the tension in each o
An airplane flies 281 km due west from city A to city B and then 439 km in the direction of 36.4? north of west from city B to city C. What is the distance between city A and city C?
Sam, whose mass is 80 kg, takes off accross level snow in his jet powered skis. The skis have a thrust of 212 N and a coefficient of kinetic friction on snow of 0.1. Unfortunatately, the skis run ou
A disk with a 1.0-m radius reaches a maximum angular speed of 18rad/s before it stops 35 revolutions (220 rad) after attaining the maximum speed. How long did it take the disk to stop?
at the bottom of 30 ft of liquid is 50 psia what is the density in lbs/ft cube?
A loudspeaker of mass 23.0 is suspended a distance of = 2.40 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 4.00 . What is the tension in each
A car drives north at 46 mi/h for 10 {rm min} and then turns east and goes 5.0 {rm mi} at 56 mi/h. Finally, it goes southwest at 30 mi/h for 6.0 {rm min} Determine the car's displacement.
A spring is mounted at an angle of = 31 on a frictionless incline as illustrated in the figure below. The spring is compressed to 15 cm where it is allowed to propel a mass of 4.4 kg up the incline.
The men's world record for the shot put, 23.12 m, was set by Randy Barnes of the United States on May 20, 1990. If the shot was launched from 6.00 ft above the ground at an initial angle of 42.0 deg
(a) How high above the ground is the highest point that the skateboarder reaches? (b) When the skateboarder reaches the highest point, how far is this point horizontally from the end of the ramp?
An electron moves in a circular path perpendicular to a uniform magnetic field with a magnitude of 2.2 mT. If the speed of the electron is 1.3 107 m/s, determine the following. (a) the radius of the
A 5.50 bullet is fired horizontally into a 1.30 wooden block resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.200. The bullet remains embedded in t
Write a350- to 700-word essay in which you compare and contrast the influence of heredity and hormones on human behavior.
A 1.6 kg softball is pitched to you at 38 m/s. You hit the ball back along the same path, and at the same speed. If the bat was in contact with the ball for 0.1 s, the magnitude of the average forc
What was the upward force of the air resistance while the coffee filter was falling at terminal speed?
Displace the block to the side and give the block an initial velocity in a direction out of the plane defined by the equilibrium position, the support point and this initial position (recall that th
A Federation starship (1.90×106 kg) uses its tractor beam to pull a shuttlecraft ( 2.10×104kg ) aboard from a distance of 13.0 km away. The tractor beam exerts a constant force of 4.0*10
A chair of weight 150 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 45.0 directed at an angle of 37.0 below the horizontal and the chair slides
You drop a single coffee filter of mass 1.7 grams from a very tall building, and it takes 52 seconds to reach the ground. In a small fraction of that time the coffee filter reached terminal speed.
A car travels 40 kilometers at an average speed of 80 km/hr and then travels 40 kilometers at an average speed of 40 km/hr. the average speed of the car for this 80 km trip is:
A plane traveling at 400 mph is flying with a bearing of 40 degrees. there is a wind of 50 mph from the south. if no correction is made for the wind, what are the final ground speed of the plane (tr
A bullet is fired horizontally from a handgun at a target 20.0 m away. if the initial speed of the bullet as it leaves the gun is 100 m/s, how far vertically will the bullet have dropped by the time
A rifle is aimed horizontally at a target 54.0m away. The bullet hits the target 2.50cm below the aim point. a) What was the bullets flight time?
A 0.006-kg bullet is fired into a 01.100-kg block of wood at rest on a horizontal surface. After impact, the block with the embedded bullet slides .200 m before coming to rest. If the coefficient of