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A grocery cart with mass of 18 kg is pushed at constant speedalong an aisle by force F=12 N. The applied force acts as a 20degree angle to the horizontal. Find the work done by each of the forces on the cart if the aisle is 15 m long.
a 15 kg flywheel has all its mass around its outer rim. a string is wrapped around it and a m 3.7 kg weight is hanging
You are standing at x=8.0km Lightning bolt 1 at x=0km and lightning bolt 2 at x=13.0 km. If your assistant didn't see the flashes at the same time, what is the time difference between the two flashes
At a particular instant, charge = 4.80×10^?6 C is at the point (0, 0.250 m , 0) and has velocity (9.20 x 10^5 m/s) i. Charge = ?2.90×10?6 C is at the point (0.150 m , 0, 0) and has velocity (-5.30 x 10^-5) j.
A +1 uC charge is held 10 cm directly above the origin. A -1 uC charge is held 5 cm directly to the right of the origin. What is the electric potential at the origin
The steel I-beam in the drawing has a weight of 1.50 × 103 N and is being lifted at a constant velocity. What is the tension in each cable attached to its ends
determine the mass of liquid ammonia that boils away before thermal equilibrium. Assume an excessive amount of liquid ammonia is present and that the liquid ammonia does not react with the copper.
A tiny sphere with a charge of q = +6.0 µC is attached to a spring. Two other tiny charged spheres, each with a charge of ?4.0-µC, are placed in the positions, in which b = 3.8 cm. The spring stretches 5.0 cm from its previous equilibrium position..
The work function of an element is 2.2 eV. Photons of a certain energy are found to eject electrons with a kinetic energy of 3 eV. What is the speed of the ejected electrons
A ball thrown horizontally at 22.0 m/s from the roof of a building lands 36.0 m from the base of the building. How high is the building
a slow proton beam fills the space between two large parallel metal plates. the distance between the plates is 2a. one
A .250 kg ball is dropped from a height of 10.0 cm onto a spring, as illustrated. If the spring has a spring constant of 60.0 N/m , how high will the ball go
Does the force that your hand exerts on the bag's handle do any work? Define. Does this force do any work while you are riding up an escalator at a constant velocity.
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