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A person pushing horizontally a uniformly-loaded 25.20 kg wheelbarrow is attempting to get it over a horizontal step whose height is 39.0% of the wheel\'s radius. What is the minimum force necessary to push the wheelbarrow over that step?
Point A is at position (4j -3k)cm. Point B is at position -3cm k. Point C is at position (3i -2j + 5k) cm. Point D is at position 4cm j. Charges of -4 and +5uC are at A and B respectively. What is the electric potential energy of an electron at D
When people sleep, their metabolic rate is about 2.6 x10-4 C/(s.kg). How numerous Calories does a 69 kg person metabolize while sleeping 9 hours.
How much work is completed on the box by the applied force
A power plant operates at a 33.0% efficiency during the summer when the seawater used for cooling is at 20.0°C. what would be the plant's efficiency in the winter
A straight horizontal wire carries a current of 3.55 ?A. A proton is moving above the wire in a direction parallel to it but opposite to the direction of the conventional current in the wire, How far is the proton above the wire
An asteroid is discovered heading straight toward Earth at 13km/s. An international team manages to attach a giant rocket engine to the asteroid. The rocket fires for 10 mins, after which the asteroid is moving at 28 degrees to its original path at a..
A transformer is designed to step down the 220V line voltage to 11V. how many turns should there be on the output coil
After landing on an unfamiliar planet, a space explorer constructs a simple pendulum of length 46.0 cm. What is the value of the acceleration of gravity on this planet
A 0.58 kg block is attached to a spring with a force constantof 116 n/m is free to move on a frictionless, horizontal surface. At that instant what is the force acting on the block
A rifle with a barrel length of 64cm fires a 12gbullet with a horizontal speed of 400m/s. What resistive force (assumed to be constant) does the wood exert on the bullet
A cylinder which is in a horizontal position contains an unknown noble gas at 4.63 × 104 Pa and is sealed with a massless piston. calculate the change in internal energy of the system
A compressible flow of a gas occurs in a pipeline. Assume uniform flow with the x-direction along the pipe axis and state the simplified continuity equation.
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