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Q. A toy rocket is launched vertically, from rest, from ground level (y = 0), at t = 0. The rocket engine provides constant upward acceleration during the burn phase. At the instant of engine burnout, the rocket has risen to 52 m and acquired a velocity of 40 m/s. The rocket continues to rise in unpowered flight, reaches maximum height and falls back to the ground.
Q. If two waves with equal amplitudes and wavelengths travel through a medium in such a way that a particlar partical of the medium is at the crest of one wave and at the trough of the other wave at the same time, what will happen to that particle?
A 73 kg parachutist descends during a vertical height of 420 m with constant speed. Find the increase in entropy produced by the parachutist; assume the air temperature is 21°C.
What is Johns resultant displacement
The total force on a one foot wide section of the inclined portion of the wall and the location and line of action of the resultant force.
Travelling at the speed of 14.10 m/s, driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.650. What is the speed of automobile after 1.130 s have elapsed..
Modeling the optical trap as a Hookean spring, evaluate the trap stiffness using the Boltzmann distribution. Determine the sphere diameter by comparing the Stokes drag and the tweezer force that balances the drag.
Find density of the object
A staging that weighs 440 N supports two painters, one 110 N and the other 460 N. The reading in the left scale is Ft = 800 N. What is the reading Fr, in the right hand scale.
A train is travelling up a 4.0 incline at the speed of 3.25 when the last car breaks free and begins to coast without friction. How long does it take for the last car to come to rest momentarily.
An open-pit coal mine consumes 96 hectares of land, down to the depth of 26 m, each year. What volume of earth, in cubic kilometres, is removed in this time.
What was the initial speed of the arrow. A block with mass m = 19.7 kg slides down an inclined plane of slope angle 35.8 deg with a constant velocity. It is then projected up the similar plane with an initial speed 1.05 m/s. How far up the incline w..
The spring of the pressure gauge has a force constant of1000 n/m and the piston has a diameter of 2.00 cm as the gauge is lowered into water, what change in depth causes piston to move in by 0.50 cm.
A horse canters away from its trainer in a straight line, moving 111 m away in 15.0 s. It then turns abruptly and gallops halfway back in 4.90 s.
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