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Q. A trajectile, of mass 20 g, travelling at 350 m/s, strikes a steel plate at an angle of 30-degrees with a plane of the plate. It ricochets off at the similar angle, at a speed of 320 m/s. What is the magnitude of the impulse that the steel plate gives to the trajectile?
Q. A 69.00 kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between the skis and the snow is 0.20. What would be magnitude of the acceleration?
A potter's wheel having a radius 0.55m and a moment of inertia 12kg•m2 is rotating freely at 51 rev/min. The potter can stop the wheel in 7 s by pressing a wet rag against the rim and exerting a radially inward force of 67N. Find out the effectual co..
What should the charge (sign and magnitude) of a particle of mass 1.49g be for it to remain stationary when placed in a downward-directed electric field of magnitude 700 N/C.
A 30.0 capacitor initially charged to 30 is discharged by a 1.40 resistor. How long does it take to reduce the capacitor's charge to 2.00.
A hawk flies in a horizontal arc of radius 14 m at a constant speed of 5 m/s. (a) Find out its centripetal acceleration. (b) It continues loftly along the same horizontal arc but increases its speed at the rate of 1 m/s2. Find out the acceleration..
A plate carries a charge of -2.0 microcoulombs while a rod carries a charge of 2.5 microcoulombs. How many electrons should be transferred from the plate to the rod, so that both objects have the equal charge.
What is an angular speed of the small cylinders, which is between two inner and outer cylinders
Hakeem throws an 8.50 g ball straight down from a height of 2.0 m. The ball strikes the floor at the speed of 7.5 m/s. What was the initial speed of the ball? Suppose that air resistance is negligible.
The windshield of a speeding car hits a hovering insect. Consider the time interval from just before the car hits the insect to just after the impact. Which of the following are right.
find the coefficient of kinetic friction between the slide and the child.
Long, long ago, on a planet far, far away, a physics experiment was carried out. First, a 0.250- ball with zero net charge was dropped from rest at a height of 1.70. The ball landed 0.400 later. Next, the ball was given a net charge of 7.85 and dropp..
Suppose that the speed of the water in the reservoir is zero, and that the water flow is steady. Overlook both air resistance and the height difference between the reservoir and the muzzle.
What is an average power output of the laser. What is the rms value of the electric field in the beam.
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