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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 0.525 kg ball starts from rest and rolls down the hill with uniform acceleration, travelling 150 m throughout the second 10.0 rm s of its motion.
2.0 kg ball moving with a speed of 3.0 m/s hits, elastically, an identical stationary ball as shown. If the first ball moves away with angle 30° to the original path,
A 0.20 {rm kg} rock is thrown vertically upward from the top of a cliff that is 31.0 {rm m} high. While it hits the ground at the base of the cliff, the rock has the speed of 31 {rm m/s}. Assume that air resistance can be ignored; find the initial sp..
A styrofoam box used to keep drinks cold at picnic has total wall area(including the lid) of 0.80m2 and wall thickness 2 cm. it is filled with ice, water and cans at 0 Celsius. What is the rate of heat flow into the box if temperature of the outsi..
What is rms speed of the atoms at temperature
A hollow spherical shell has mass 8.00 and radius 0.225. It is originally at rest and then rotates about a stationary axis that lies along a diameter with the constant acceleration of 0.905. What is the kinetic energy of the shell after it has turned..
A young boy swings a yo-yo horizontally above his head at an angular acceleration of 0.32 rad/s^2. If the tangential acceleration of the yo-yo at the end of the string is 0.15 m/s^2, how long is string.
What volume of space contains an energy equal. A car in stop-and-go traffic starts at rest, moves forward 12m in 8 seconds, then comes to rest again. The velocity-versus-time plot for this car is given.
The object is authorized to move on a horizontal frictionless surface. The object is released from rest when the spring is compressed 0.15 m. Find out the force on the object.
Two charged dust particles exert a force of 8.5 x10-2 N on each other. What will be the force if they are moved so they are only one-seventh as far apart.
What is the electric potential between the two terminals. A capacitor is formed by placing a 20 cm long charge carrier charged to +10nC placed 5cm away from and parallel to a 20 cm long charge carrier charged to -10 nC. Find the electric field at 1..
If water at 15°C is flowing through a 3cm diameter pipe with a velocity of 50 cm-1, calculate the Reynolds number. Is the flow turbulent or laminar?
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