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A wall is composed of two materials. Material 1 has a thickness of 5.89 centimeter and a thermal conductivity of 0.1 the material 2 has a thickness of 5.87 centimeter and the inside temperature is 24.3oC, obtain what is the temperature of the interface to the nearest tenth of a degree Celsius? The energy loss is 553 watts.
When a voltage difference is applied to a piece of copper wire, a 5.0 mA current flows. If the copper wire is replaced with a silver wire with twice the diameter of the copper wire
What is the rms current in an RC circuit if R = 29.1 k?, C = 0.820 µF, and the rms applied voltage is 120 V at 60.0 Hz? (in A) A: 9.27×10-4 B: 1.34×10-3 C: 1.95×10-3 D: 2.83×10-3 E: 4.10×10-3 What is the phase angle between voltage and current? (in d..
As you stand on a pier looking at a harbor, the waves created by a large freighter come ashore. You estimate the wavelength to be 3.0 m, What is the frequency of the wave in hertz
A 1600 kg car starts from rest at A, coasts 180m through a dip and comes to stop at B after coasting a distance d on level ground. If the rolling resistance is a constant force of 280N, conclude the distance d.
The Andromeda Galaxy is approximately 2.21 million light years away from Earth? find how long will it take to get to the Sun
If the Sun were to disappear or somehow radically change its output, how long would it take for us on Earth to learn about it
The block in the figure below lies on a horizontal frictionless surface and is attached to the free end of the spring, with a spring constant of 35 N/m. What is the position of the block
The average resistivity of the human body is 5 ohm*m. The conducting path between two hands is approximated as a cylinder with length 1.6m, what is the resistance between the hands
A nearsighted patient's far point is 0.645 m from her eyes. She is able to see distant objects in focus when wearing glasses by a refractive power of -1.6 diopters. What is the distance among her eyes and the glasses?
A loop of diameter d = 10 cm, carrying a current I = 0.2 A is placed inside a magnetic field = 0.3 T . The normal to the loop is parallel to a unit vector Calculate the magnitude of the torque on the loop
A lead ball is dropped into a lake from a diving board 5.0 mabove the water. How deep is the lake
The current in a coil drops from 3.4 A to 2.8 A in 0.51 s. If the average emf induced in the coil is 12 mV, what is the self-inductance of the coil
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