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A lead ball is dropped into a lake from a diving board 5.0 mabove the water. After entering the water, it sinks to thebottom with a constant velocity equal to the velocity withwhich it hit the water. The ball reaches the bottom 3.0safter it is released. How deep is the lake?
At a temperature of 1.66 °C, the mass and volume of a fluid are 798 kg and 1.20 m3. The coefficient of volume expansion is 1.58 x 10-3 (C°)-1. What is the density of the fluid at this temperature
Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 1600 kg and was approaching at 7.00 m/s due south. Calculate the final velocity of the cars
You drive on Interstate 10 from San Antonio to Houston, half the time at 50 km/h and the other half at 88 km/h. On the way back you travel half the distance at 50 km/h and the other half at 88 km/h. (a) What is your average speed from San Antonio to ..
A pilot having mass M(kg) flies a plane in a vertical loop with a radius of 800m at a constant speed of 500 km/h. Determine the force exerted on the pilot by the seat at both the top and bottom of the loop
You are driving to the grocery store at 24 m/s. You are 115 m from an intersection when the traffic light turns red. Suppose that your reaction time is 0.50 s and that your car brakes with constant acceleration. How far are you from the intersecti..
A 1055-kg van, stopped at a traffic light, is hit directly in the rear by a 670-kg car traveling with a velocity of +2.35 m/s. What is the final velocity of each vehicle
You have a lens whose focal length is 5.17 cm. You place an object on the axis of the lens at a distance of 11.5 cm from it. How far is the object\'s image from the lens
A string under tension of 50.0 N is used to whirl a rock in a horizontal circle of radius 2.5 m at a speed of 20.4 m/s on a frictionless table. What is the breaking strength, in Newtons, of the string
What linear speed must a 0.065-kg hula hoop have if its total kinetic energy is to be 0.12J? Assume the hoop rolls on the ground without slipping.
How much heat energy can created throughout motion
If the coefficient of friction between the block and the floor is 0.40, what is the mass of the block.
A 62 kg person on skis starts from rest down a hill sloped at 40° from the horizontal. The coefficient of friction between the skis and the snow is 0.10.
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