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The temperature in an electric oven is 192 °C. The temperature at the outer surface in the kitchen is 35.1 °C. The oven (surface area = 1.65 m2) is insulated with material that has a thickness of 0.00525 m and a thermal conductivity of 0.0206 J/(s m C°).
(a) How much energy is used to operate the oven for 3.61 hours?
(b) At a price of $0.10 per kilowatt-hour for electrical energy, what is the cost (in dollars) of operating the oven?
An oscillating LC circuit consisting of a 5.0 nF capacitor anda 2.3 mH coil has a maximum volatage of 2.0 V. What is the maximum charge on the capacitor
Two blocks slide on a horizontal, frictionless surface with two springs on opposite sides. Block A has mass 1.14 kg and Block B has mass 3.27 kg. What is the maximum compression of Spring 2
question a rod rests on frictionless ice. forces that are equal in magnitude and opposite in direction are
If so evaluate their acceleraton and the tension in the string. If not determine the sum of the magnitudes of the forces of friction acting on the blocks.
The bucket is released from rest at the top of a well and falls a distance 10.3 to the water. You can ignore the weight of the rope.
An object starts from rest at time t = 0.00 s and moves in the +x direction with constant acceleration. compute the acceleration of the object
The space shuttle is in a 400km -high circular orbit. It needs to reach a 580km -high circular orbit to catch the Hubble Space Telescope for repairs. How much energy is required to boost it to the new orbit
A 265.0 kg block of ice at 0o C is placed in a large lake. The temperature of the lake is just slightly higher than 0o C, and the ice melts. What is the entropy change of the lake
An ac generator has a frequency of 4.80 kHz and produces a current of 0.0400 A in a series circuit that contains only a 231 resistor, Obtain the voltage of the generator
A 180 g wire is held under a tension of 216 N with one end at x = 0 and the other at x = 15.0 m. At time t = 0, pulse 1 is sent along the wire from the end at x = 15.0 m. At time t = 37.9 ms, pulse 2 is sent along the wire from the end at x = 0. A..
Carbon dioxide gas (CO2) enters a pipe at a pressure of 3.5 MPa and a temperature of 450 K at a mass flow rate of 2 kg/sec. This gas flow is cooled at a constant pressure until its temperature drops to 400 K at the exit of the pipe.
vector a has magnitude of 5.0 at an angle of 60.0 o from the x-axis. vector b has magnitude of 9.0 at an angle of -20.0
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