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Q1. A 4.20 kg model rocket is launched, expelling 57.0 g of burned fuel from its exhaust at a speed of 675 m/s. What is the velocity of the rocket after fuel has burned? Hint: Ignore the external forces of gravity and air resistance.
Q2. A 95 kg man lying on a surface of negligible friction shoves a 64 g stone away from himself, giving it a speed of 4.0 m/s. What speed does the man obtain as a result?
A capacitor consisting of two plates separated by a distance d of 4.25 x 10^-3, with an area A of 8.15 x 10^-4 m^2, What is the numerical value of the energy for the capacitor
q1. two trains each having a speed of 38 kmh are headed at each other on the identical straight track. a bird that can
What relationship can you infer about the directions of the electric field lines and equipotential lines, What is the potential of the conductor
q1. a pet-store supply truck moves at 25ms north along a highway. inside a dog moves at 1.85ms at an angle of 35deg
The outside mirror on the passenger side of a car is convex and has a focal length of -6.9 m. find the magnification of the mirror
a wire loop of dimensions L = 50.0 cm and W = 30.0 cm lies in a magnetic field . If = (3.00 10-2 T/m)y : What is the direction of the emf induced in the loop
A ball is thrown horizontally with a speed of 10.0m/s, from the edge of the top of a building of height 19.6m, What is the vertical component of the velocity just before the ball strikes the ground
A large boat with a weight of 70000 tons moves at constant speed due west. What is the net force on the boat
A molecule of DNA (deoxyribonucleic acid) is 2.35 µm long. The ends of the molecule become singly ionized: Determine the effective spring constant of the molecule
A straight horizontal pipe with a diameter of 1.0 cm and a length of 53 m carries oil with a coefficient of viscosity of 0.11 N · s/m2. Find the gauge pressure at the pipe input
A ship's mast reaches to a height of 15 meters above the surface of a 10-meter- deep lake. When the sun is 30 degrees above the horizon, how long will the shadow of the mast be on the bottom of the lake?
question1a hotel elevator ascends 160 with a utmost speed of 4.9. its acceleration and deceleration both have a
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