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Two pieces of the same metal, however of different mass and at different initial temperature, come in thermal contact. When the two pieces reach thermal equilibrium, which one will have greater temperature change? Assume that the two pieces form a closed system.
1. The one with the smaller mass
2. The one with the greater mass
3. The one with lower initial temperature
4. The one with the higher initial temperature
A piece of Nichrome wire has a radius of 5.50 10-4 m. It is used in a laboratory to make a heater that uses 3.00 102 W of power, estimate the necessary length of wire
A uniform electric field points midway between the positive x and y axies. Its strength is 100Volts/m. Find the location of the point where the total electrid field is zero
A cup of water is heated with a heating coil that delivers 117.85 W of heat. In one minute, the temperature of the water rises by 29.47 C. What is the mass in grams of the water
double stranded dna molecule negatively charged with a charge density of -e per nanometer1. what is the electric field
A listener increases his distance from a sound source by a factor of 3.62. what is the change in the sound intensity level in dB
A crate of eggs is located in the middle of the flat bed of a pickup truck as the truck negotiates a curve in the flat road, how fast can the truck be moving without the crate sliding
An oscilloscope shows a steady sinusoidal signal of 5 Volt peak to peak, which spans 5 cm in vertical direction on the screen. What will be observed on the oscilloscope screen
1. your best friend miguel who controls the cartels interests in south east asia is getting married in karachi pakistan
Briefly describe how the resulting interference pattern will differ for the various types of particles - the shower of particles will scatter in all directions with equal probability. Is it possible to determine in advance the trajectory of any in..
A boat crosses a 500 m river. The water run at 5.9527 m/s due east. The boat is able to travel at 5 m/s relative to the water. what is the net displacement along the river bank
You pull your little sister across a flat snowy field on a sled. Your sister plus the sled have a mass of 31 kg. The rope is at an angle of 30 degrees to the ground. As you pull with a force of 30 N, the sled travels a distance of 45 m.
Consider the swimmer in the figure below. Suppose that his swimming speed relative to the water is 5.7 m/s, current = 2.6 m/s, How long will it take for him to cross the river
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