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During a particular process, the pressure of the gas in a heat engine increases from 1.15×105 Pa to 2.37×105 Pa, while the volume increases from 2.33×10?2 m3 to 2.89×10?2 m3. The pressure-volume graph is a straight line.
(a) What is the work associated with the process? Make sure to include the correct sign.
(b) Is work done on the system, or does the system do work on its suroundings?
A convex mirror has a focal length of -30.0 cm. A 15.0-cm-tall object is located 30.0 cm in front of this mirror. determine the location and size of the image
A bomb is designed to explode 2.00 s after it is armed. The bomb is launched from earth and accelerated to an unknown final speed. What is the final speed of the bomb just before it explodes
Assume that the net horizontal force is due to rolling friction only and take free-fall acceleration to be = 9.80 .What is the coefficient of rolling friction for the tire under low pressure.
A spelunker is surveying a cave. She follows a passage 150m straight west, then 230m in a direction 45, Use a scale drawing to determine the magnitude of the fourth displacement, Determine the direction of the fourth displacement
A nichrome toaster wire, initially at room temperature, carries 2.72A immediately after it's turned on. What's the temperature of the nichrome then
An ideal gas expands at constant pressure of 5.0 atm. from 240 milliliters to 630 milliliters, Calculate the total work (in joules) done by the gas in the process
An object with a mass of m = 5.3 kg is attached to the free end of a light string wrapped around a reel of radius R = 0.255 m and mass of M = 3.00 kg, Determine the speed with which the object hits the floor
A girl is sledding down a slope that is inclined at 30º with respect to the horizontal, The combined mass of the girl and the sled is 76.5 kg, How much time is required for the sled to travel down a 149-m slope, starting from rest
When yellow light from a sodium lamp shines on a certain photocell, What potential would be needed to stop the electrons if light with 4000 A is used
what is meant by 'net charge a. the total amount of positive charge of an object b. the total amount of negative charge on an object c. the total amount of neutral charge on an object d. A minus B
A wooden raft has a mass of 92kg. When empty it floats in water (density 1000 kg/m3) with 48 percent of its volume submerged. What mass of sand can be put on the raft without it sinking.
A horizontal magnetic field of 1.0 x 10-4 T is at an angle of 30o to the direction of the current in a straight wire 75 cm long. If the wire carries a current of 15 A
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