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A steel ball of mass m1 = 1.1 kg and a cord of length of L =1.8 m of negligible mass make up asimple pendulum that can pivot without friction about the pointO, as in the figure below. This pendulum is released fromrest in a horizontal position, and when the ball is at its lowestpoint it strikes a block of mass m2 =1.1 kg sitting at rest on a shelf.Assume that the collision is perfectly elastic and that thecoefficient of kinetic friction between the block and shelf is0.10.
a) What is the velocity of the block just after impact?b) How far does the block slide before coming to rest (assuming that the shelf is long enough)?
A speed skater moving across frictionless ice at 8.6 m/s hits a 5.5 m wide patch of rough ice. She slows steadily, What is her acceleration on the rough ice
A baseball pitcher pitches a fastball with a horizontal velocity of 40 m/s. The horizontal distance from the point of release to home plate is 17.50 m. what is the instantaneous linear veloity of the sweet spot at the instant of ball contact
An industrial flywheel with a moment of inertia of 445kg?m2 rotates with a speed of 6500rpm. How much work is required to bring the flywheel to rest
For the circuit shown in the following figure both meters are idealized, the battery has no appreciable internal resistance, and the ammeter reads 1.19 A. What does the voltmeter read
calculate the net percent value of these costs and benefits of an information system. Also calculate the overall return on investment of the project and then percent a break even analysis.
one gram of water changes from liquid to solid at a constantpressure 1.00 atm and a constant temperature of 0degrees. Find the work done on the water
A dead battery of 10v has an internal resistance of 1 ohms and is connected in parallel with jumper cables to another car with a 12v battery with internal resistance of 0.01 ohms
A tank contains benzene, which has index of refraction1.50. A dime is on the botton of the tank. What is the actual depth of the benzene
Suppose a car starts from rest and completes a straight line, 1/4 mile (402 meter) race in 12.3 seconds. Assume the acceleration to be constant.
A 300 bird flying along at 6.0 m/s sees a 7.0 g insect heading straight toward it with a speed of 25m/s (as measured by an observer on the ground, not by the bird). The bird opens its mouth wide and enjoys a nice lunch. What is the bird's speed immed..
Calculate the magnitude of the gravitational force exerted on a 429-kg satellite that is a distance of 2.91 times earth radii from the center of the earth. What is the magnitude of the earth's acceleration
A red laser pointer with a wavelength of 635 nm is shined on a double slit producing a diffraction pattern on a screen that is 1.75 m behind the double slit. The central maximum of the diffraction pattern has a width of 4.30 cm, and the fourth bright..
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