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Q. A projectile that is fired from a gun has an initial velocity of 86 at an angle of 53 above the horizontal. When the projectile is at the top of its trajectory, an internal explosion causes it to separate into two fragments of equal mass. One of the fragments falls straight downward as though it had been free from rest.
The maximum transverse acceleration of a point at the middle of the segment is 8800 m/s^2 and the maximum transverse velocity is 3.50m/s.
It has been suggested that rotating cylinders about 10 mi long and 5.0 mi in diameter be placed in space and used as colonies. What angular speed should such a cylinder have so that the centripetal acceleration at its surface equals the free-fall ..
A car traveling at 18 {rm m/s} runs out of gas while traveling up a 24.0^circ slope. How far up the hill will it coast before starting to roll back down.
A 1110 N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A 1960 N crate hangs from far end of beam.
To demonstrate the tremendous acceleration of a top fuel drag racer, you attempt to run your car into the back of a dragster that is "burning out" at red light before the start of a race. (Burning out means spinning the tires at high speed to heat..
A circular saw blade completes 1200 revolutions in 40 rm s while coasting to a stop after being turned off. Assuming steady deceleration, what are (a) angular deceleration and (b) initial angular speed.
Two small spheres spaced 20centimetres apart have equal charge. How many excess electrons should be present on each sphere if magnitude of the force of repulsion between them is newtons.
what is the potential difference between the plates.Take the zero of the gravitational potential energy to be at the position of the child as the ropes are horizontal.
The escape speed from the Earth is 1.12 × 10^4 m/s, so a gas molecule traveling away from Earth near the outer boundary of the Earth's atmosphere would, at this speed, be able to escape from Earth's gravitational field.
The distance between the first and fifth minimum on a screen 60 cm behind the slits is 6.0 mm. What is the wavelength of the light used in this experiment.
If a car traveling at 66 km/h will skid 22 m when its brakes lock, how far would it skid if it is traveling at 120 km/h when its brakes lock.
find the coefficient of kinetic friction between skis and snow.Three equal point charges, each with charge 1.80 mu C, are placed at the vertices of an equilateral triangle whose sides are of length 0.500 m. What is the electric potential energy U o..
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