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1. If in Joule's paddlewheel experiment a block of mass 10 kg is allowed to fall through 22.5 meters and the mass of the water is 50 grams, what is the total increase in temperature of the water?
Point charges q1=? 4.10nC and q2=+ 4.10nC are separated by distance 3.20mm , forming an electric dipole, What is the direction of the dipole moment
In a classical model of the hydrogen atom, the electron orbits a stationary proton in a circular orbit
A 11.4-kg cylinder rolls without slipping on a rough surface. At an instant when its center of gravity has a speed of 12.1 m/s, find the rotational kinetic energy
Starting with the three particle system, find the change in electric potential energy if the alpha particle is allowed to escape to infinity while the two protons remain fixed in place. (Throughout, neglect any radiation effects.)
A wire of initial length L0 and radius r0 has a measured resistance of 2.0 . The wire is drawn under tensile stress to a new uniform radius of r = 0.45r0. What is the new resistance of the wire
An 8.7 hour trip is made at an average speed of 73 km/hr. If the first third of the trip (chronologically) was driven at 96.5 km/hr, what was the average speed for the rest of journey.
A proton moves at a speed of 1100 m/s in a direction perpendicular to a magnetic field with a magnitude of 0.80 T
How many electrons should be transferred from the plate. When you enter your answer, leave off the unit rm dB.
Two capacitors, of 3.2 and 4.8?F capacitance, are connected in parallel across a 300 V potential difference. Calculate the total energy stored in the capacitors
Given: A 23.0\mu F capacitor is charged by a 135.0-V power supply, then disconnected from the power and connected in series with a 0.270-mH inductor.
A piece of glass has a temperature of 80.6 ° C. Liquid that has a temperature of 43.0 ° C is poured over the glass, determine the specific heat capacity of the liquid
Three balls are constrained to move on the circumference of a circle of radius R. find the characteristic frequencies of the system
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