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An object in circular motion has its tangential velocity go down at a constant rate from 39.0 m/s to 15.0 m/s in 2.40 seconds. The circle it is going in has a radius of 20.0 meters. At the time its speed reaches 15.0 m/s
A) What is its centripetal (radial) acceleration?
B) What is the total acceleration?
C) What is the angle between its tangential acceleration and its total acceleration vector?
An ultralight plane and pilot have a total mass of 168 kg, what is the net force acting on the plane and pilot
The ballistic pendulum is a device used to measure the speed of a projectile, such as a bullet. calculate the speed immediately after collision
Determine the circumference of a path that follows a great arc at a latitude of 45 degrees around a spherical planet that has a radius R of 5000
Water flows at 0.950 m/s from a hot water heater, through a 450-kPa pressure regulator. What's the flow speed in this pipe
Two particles each with charge +1.86 µC are located on the x axis. One is at x = 1.00 m, and the other is at x = ?1.00 m. (a) Determine the electric potential on the y axis at y = 0.320 m. .... kV (b) Calculate the change in electric potential energy..
A 60 g ball is tied to the end of a 50 cm --long string and swung in a vertical circle. how far to the right does the ball hit the ground
A Porsche 944 Turbo has a rated engine power of 217 . 30% of the power is lost in the drive train, and 70% reaches the wheels. what is its speed when it reaches maximum power output
The spindle of a stirrer rotating at 2100 rpm slows down uniformly to 900 rpm while making 80 revolutions. Compute the angular acceleration of the stirrer and the time required to slow down.
What is an angular speed of the small cylinders, which is between two inner and outer cylinders
the fresh water behind a reservoir dam has depth D = 14.4 m. A horizontal pipe 4.18 cm in diameter passes through the dam at depth d = 6.40 m. Find the magnitude of the frictional force between plug and pipe wall
The volume of an ideal gas is increased from 1 m3 to 2 m3 while maintaining a constant pressure of 1000 Pa (1 Pa = 1 N/m2). How much work is done by the gas in this expansion
a 5 kg mass is attached to the end of a 1.0-m string. The system is whirled in a horizontal circular path. What is the maximum speed of the mass if the string is not to break
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