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Q1. You bring a 350-g wrench into the house from your car. The house is 15 C warmer than the car, and it takes 2.52 kJ of energy to warm the wrench by this amount. Find (a) heat capacity of the wrench and (b) specic heat of the metal it's made from.
Q2. A small sphere of charge q1 = 0.768 µC hangs from the end of a spring (a). When another small sphere of charge q2 = -0.648 µC is held beneath the first sphere.
(b). spring stretches by d = 3.84 cm from its original length and reaches a new equilibrium position with a separation between the charges of r = 4.65 cm. What is the force constant of the spring?
A long wire lying along the x-axis carries a current of 1.60 A in the +x direction. There is the uniform magnetic field present, given by B=0.003i + 0.004j + 0.002k, where i, j, k are the unit vectors along cartesian coordinate axes') in units of Tes..
Problem on elevator
What is the instantaneous power, at a time of 0.00700 seconds, dissipated by a 200 ohm resistor in a resonant AC circuit powered by a generator with a 21.0 V highest potential difference operating at 5000 rad/s .
A curve of radius 40 m is banked for a design speed of 100 km/h. If the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely create the curve?
What is the potential difference measured by voltmeter
A 73.0 kg construction worker stands at the far end of the beam.What is the magnitude of the torque about the point where the beam is bolted into place .
Calculate the rates of solar heating
What is velocity of insect after it has accelerated
What is the maximum speed the masses
Just by the impact, the clay has speed v0 = 9 m/s, and the disk is rotating clockwise with angular speed w0 = 0.4 rad/s. Just following the impact, what is an angular speed of the combined system of wheel plus clay.
Discover the magnitude of acceleration
Find an expression for work done by the gas
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