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The brakes of a truck cause it to slow down by applying a retarding force of 4060 N to the truck over a distance of 1150 m. What is the work done by this force on the truck?
A man pushing a mop across a floor causes it to undergo two displacements. The first has a magnitude of 150 cm, Find the magnitude and direction of the second displacement
Nichrome wire of cross-sectional radius 0.753 mm is to be used in winding a heating coil, Find the required resistance of the coil
A boat takes 3.30 hours to travel 40.0 km down a river, then 5.00 hours to return. How fast is the river flowing
An airplane increases its speed from 100 m/s to 160 m/s, How much time does it take for the complete increase in speed
An astronaut in a satellite says she can just barely resolve two point sources on the Earth, 110km below. Assume λ=540nm, and the pupil diameter of the astronaut's eye to be 5.20mm.
A 0.740 m long brass pendulum experiences a 20.0°C temperature increase, Find the ratio of the change in period to the original period, What is the change in the period
An electron accelerated from rest through a voltage of 350V enters a region of constant magnetic field. If the electron follows a circular path with a radius of 28cm, what is the magnitude of magnetic field.
A silver coin has the mass of 17.75g. If the atomic mass of silver is 107.868u, how many silver atoms are in the coin
A chain consisting of five links, each of mass 0.200 kg, is lifted vertically with a constant acceleration of a = 2.7 m/s2. Find out the magnitude of the force that link 3 exerts on link 2.
Certain stars at the end of their lives are thought to collapse combining their protons and electrons together to form a neutron star. Such a star could be thought of as a giant atomic nucleus.
At rest, a car's horn sounds at a frequency of 480 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car's speed hears a frequency of 470 Hz. What is the speed of the car?
two charges, q1 and q2 are present on a normal coordinate system ,point A is located at the orgin, q1 has a charge of 1.11 nC, what is the electric potential at point A
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