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In a certain chemical process, a lab technician supplies 231J of heat to a system. At the same time, 67.0 J of work are done on the system by its surroundings.
A) What is the increase in the internal energy of the system? (J)
A daredevil jumps a canyon 11.8 m wide. To do so, he drives a car up a 20° incline. What minimum speed must he achieve to clear the canyon
Two point charges are placed along a horizontal axis with the following values and positions: +1 µC at x = 0 cm, At what point (the coordinate) along the x axis is the electric field zero
A 5.5kg block is initially at rest on a frictionless horizontal surface. It is pulled with constant horizontal force of 3.8 newtons. How far does it move in this time
two long parallel wires separated by 50 cm both carry currents of 4.0 A in the same vertically up direction. Find the magnetic field midway between the wires
You have a mechanism by which you can use a magnetic spectrograph to chose the energy of the beta rays from a 137Cs source. What thickness of the brass foils in g/cm2 does it take to stop the 0.8 MeV beta rays
A silver wire of diameter 1.0 mm carries a current of 140 mA. How long (on average) does it take for a conduction electron to move 1.0 cm along the wire
q1. a dentists drill starts from rest. after 3.20 s of constant angular acceleration it turns at a rate of 2.46 104
An ac generator supplies 20 A at 220 V to a 10,000 V power line. If the step-up transformer has 110 turns in its primary coil, how many turns are in the secondary coil
Smaller mammals use proportionately more energy than larger mammals; that is, it takes more energy per gram to power a mouse than a human. A typical mouse has a mass of 20 g and, at rest, needs to consume 3.0 Cal each day for basic body processes.
A 10.0 cm radius piston compresses a gas isothermally from a height of 15.0 cm to 2.50 cm at a constant pressure of 2.0 atm. How much heat was added to the gas
A rock is thrown from the roof of a building, with an initial velocity of 10.0 m/s at an angle of 30.0 ° above the horizontal. What is the height of the building
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
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