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A copper pot with a mass of 0.500 kg contains 0.145 kg of water, and both are at a temperature of 22.5 °C . A 0.255 kg block of iron at 83.5 °C is dropped into the pot. Find the final temperature of the system, assuming no heat loss to the surroundings.
A 12.0 m long conveyor belt, inclined at 40.0°, is used to transport bundles of newspapers from the mailroom up to the cargo bay to be loaded on to delivery trucks. Each newspaper has the mass of 1.00 kg, and there are 26 newspapers per bundle. Concl..
Assume the corners of a cube of side a are occupied each by a positive charge q, What is the net force on each of the eight charges
Two identical piano wires have a fundamental frequency of 699 Hertz when kept under the same tension. Find what fractional increase in the tension of one wire
A physics professor did daredevil stunts in his spare time. His last stunt was an attempt to jump across a river on a motorcycle. What should his speed have been at the top of the ramp
Even though this experiment is mathematically simple, its conceptual significance is immense. Explain how the experiment confirms the quantized nature of photon energy. How is the connection established between wave and particle theories of light..
Atmospheric air flows over a flat plate as shown in Fig. 4.17. Viscosity makes the air stick to the surface creating a thin boundary layer. Estimate the mass flux mm_ of the air across the surface that is 10 cm above the 120-cm wide plate if uðyÞ¼..
A transformer connected to a 120 V ac line needs to supply 12,500 Vac to power an immense neon sign used as a business advertisement. What is the ration of secondary to primary turns of the transformer needed in order to make the sing light-up?
A rifle with a barrel length of 65cm fires a 10g bullet with a horizontal speed of 400m/s. How long does it take the bullet to come to rest
At NASA's Zero Gravity Research Facility in Cleveland, Ohio, experimental payloads fall freely from rest in an evacuated vertical shaft through a distance of 132 m. How fast will the payload be traveling when it reaches the bottom of the shaft
q1. a beam of 6 mev electrons passes through a 400 micro-meter thick silicon detector. estimate the energy lost by the
an empty parallel plate capacitor is connected between the terminals of a 18.1-v battery and charges up. the capacitor
The electron beam inside a television picture tube is 0.300mm in diameter and carries a current of 50.0 ?A. What is the current density in the electron beam
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