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Find what is the change in entropy of 80 gram of steam at 100oC, when it is condensed to water at 100oC?
A rock of mass 47 kg accidentally breaks loose from the edge of a cliff and falls straight down. The magnitude of the air resistance that opposes its downward motion is 252 N. Determine the magnitude of the acceleration of the rock
Assume unpolarized light of intensity 197 W/m2 falls on the polarizer in the figure, and the angle in the drawing is 37.0°. What is the light intensity reaching the photocell?
a 90 ohm resistor has a current of .6A and is connect in series with a 150 ohm resistor. What is the emf of the battery to which the resistors are connected
A particular Ferris wheel has a radius of 24 meters, and it makes one complete revolution around its axle (at location A) in 20 seconds. In all of the following questions, consider location A (at the center of the axle) as the location around whic..
A 15kg block is at the top of a smooth incline that is 20 degrees with respect to the horizontal and is 75 m in length. How far down the incline did it slide
a brass ring of diameter 10.00 cm at 20.0degc is heated and slipped over an aluminum rod with a diameter of 10.01 cm at
When ultraviolet light of wavelength 2.54*10-5 cm and intensity 0.5 mW/cm2 form a mercury arc falls upon a clean copper surface, the stopping potential necessary to stop the emission of the photo-electrons is 0.59 V.
The minute hand on a watch is 2.0 cm long. When striking, the pike, a predatory fish, can accelerate from rest to a speed of 3.7 m/s in 0.11 s. Ball bearings can be made with letting spherical drops of molten metal fall inside a tall tower - called a..
A charge of -3.0 nC is at the origin and a second charge of 13.0 nC is at x = 8.00 m. Find the magnitude and direction of the electric field halfway in between the two charges.
At 28.0 m below the surface of the sea (density = 1 025 kg/m3), where the temperature is 5.00°C, obtain the volume of the bubble just before it breaks the surface
A 60 kg trunk is pushed 5.8 m at constant speedup a 30° incline by a constant horizontal force. The coefficient of kinetic friction among the trunk and the incline is 0.17. Compute the work done by the applied horizontal force. Compute the work done ..
two blocks are pressed together, compressing a spring, the system is then released from rest on a level, frictionless surface. the spring is not attacthed to either block and drops to the surface after it is expanded. i need to demonstrate whether th..
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