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Q. Mrs. Johnson has attached a sign that has a weight of 495 N (Fv) to a wall outside her office, as shown in the diagram. Determine (a) the magnitude of the tension in the chain and (b) the thrust force (Fh) exerted by the rod against the wall.
Q. A steel paper clip is bent by a force of 10.0 N exerted on it through a distance of 5.00 cm.By how much does the temperature of the midsection of the paper clip increase if all the energy goes into the internal energy of this section, which has a mass of 0.100 g?
The boom in the crane is free to pivot about point P and is supported by the cable that joins halfway along its 18 m length. the cable passes over a pulley and is anchored at the back of crane. the boom has a mass of 1700 kg, distributed evenly an..
How much heat does it take to increase the temperature of 4.50 moles of a diatomic ideal gas through an amount 40 if the gas is held at constant volume? The gas molecules can translate and rotate but not vibrate.
On a level road with its brakes on, a car traveling at 93km/hr stops within 92m when the brakes lock and the car slides.
A 0.12-kg ball is placed in a shallow wedge with an opening angle of 120°, as shown in the figure. For each contact point between the wedge and the ball, determine the force exerted on the ball. Assume the system is frictionless. Find contact force o..
The dummy in a crash test has a head of mass 3 kg. The dummy is strapped in firmly so that the body does not move. The car's forward speed changes from 24 m/s to zero in 0.23 s.
Two particles moving under the influence of their mutual gravitational force describe circular orbits about one another with a period T. If they are suddenly stopped in their orbits and allowed to gravitate towards each other, show that they would..
A ship sets out to sail to a point 156 km due north. An unexpected storm blows the ship to a point 118 km due east of its starting point. How far should it now sail to reach its original destination.
Two point charges, Q1 = -7 and Q2 = 2 are located between two oppositely charged parallel plates. The two charges are separated by a distance of x = 0.33m. Assume that the electric field produced by the charged plates is uniform and equal to E = 6..
The average intensity of sunlight at the top of the earth's atmosphere is 1390 W/m2. What is the most energy that a 30 m multiplied by 55 m solar panel might collect in one hour in this sunlight.
An elastic cord is 64 cm long when a weight of 56 N hangs from it and is 69 cm long when a weight of 83 N hangs from it. What is the "spring" constant of this elastic cord.
Then find the force between them as a function of distance h. describe why the sign of the force does (or does not) make sense to you.
Write down a function named as kineticEnergy() which determines the kinetic energy of an object in accordance with the following formula.
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