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A 5.4kg object is suspended by a string from the ceiling of anelevator. The acceleration of gravity is 9.8m/s^2. Determine the tension in the string if it is accelerating upward at a rate of 3.8m/s^2. Could you also tell which physic textbook this questioncame from?
q1. a proton is travelling to the right at. it has a head-on perfectly elastic collision with a carbon atom. the mass
Water is flowing in a drainage channel of rectangular cross-section. At one point, the width of the channel is 12 m, the depth of water is 6.0 m, What is the speed of the flow at the second point
A dentist's chair with a patient in it weighs 2260 N. The output plunger of a hydraulic system begins to lift the chair when the dentist's foot applies a force of62 N to the input piston. Neglect any height difference between the plunger and the pist..
the standard enthalpy of formation of the metallocene bisbenzenechromium was measured in a calorimeter. it was found
A 76-kg man is at rest on ice skates. A 0.24-kg ball is thrown to him. The ball is moving horizontally at 26 m/s just before the man catches it. How fast is the man moving just after he catches the ball
A long straight wire carries a current of 4.5 A. The wire is horizontal in the plane of the page (screen), What is the force that acts on the electron
An unstable particle at rest breaks up into two fragments of unequal mass. what is the speed of the heavier fragment
A swimmer runs horizontally off a diving board with a speed of 3.58 m/s and hits the water a horizontal distance of 1.79 m from the end of the board. How high above the water was diving board.
an induction roller coaster can accelerate a train from zero to 27m/s in 2.5 seconds. What is the average force exerted on a 68kg rider
A box is dropped from a spacecraft moving horizontally at 27.0 m/s at a distance of 155 m above the surface of a moon. The rate of freefall acceleration on this airless moon is 2.79 m/s2.
a 0.17hp electric motor on a water well pumps water from 42.64m below the surface. the density of water is 1.0 kgliter.
In 1971, Apollo 14 astronaut Alan Shepard hit two golf balls while on the Moon. The first one rolled 40 yards into a nearby crater, Is the second ball still on the moon
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