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1. Use the second law of thermodynamics to explain why many poor people in developing countries live on a mostly vegetarian diet?
2. Someone wants you to invest money in an automobile engine that will produce more energy than the energy in the fuel (such as gasoline or electricity) used to run the motor. What is your response? Hint: Second law of thermodynamics
a 100 kg car travelling at 20 ms collides with a 100 kg car traveling at 8 ms in opposite direction a if the two cars
If the focal length of lens is 0.67 m and the distance of the object is 120 cm. Find the distance of image and magnification
A football kicker can give the ball an initial speed of 31 m/s. What are the (a) least and (b) greatest elevation angles at which he can kick the ball to score a field goal from a point 50 m in front of goalposts whose horizontal bar is 3.44 m above ..
given that the speed of sound in the air is 343 ms and that human ears are typically 20 cm apart what is the maximum
The accompanying pressure-volume graph shows an engine cycle with one isothermal process, B-C. What is the net work done by the gas during one cycle
An electron is released from rest at the negative plate of a parallel plate capacitor. Obtain how fast is the electron moving just before it reaches the positive plate
A birds travels at 1.4 m/s with a fish in its claws, at 15 degrees below the horizontal. If it drops the fish that takes 1.8 seconds to land on the ground
A particular refracting telescope takes the moon and magnifies the image by a power of 250x with the observer having a relaxed eye, What are the focal lengths of the two lenses
A 62.1 kilogram skier coasts up a snow-covered hill that creates an angle of 23.1 degree with the horizontal. Find the work done by the kinetic frictional force that acts on the skier
What horizontal force acts on the puck after the push
A wheel is placed on a test stand so that it is free to turn on its axle. What is the moment of inertia of the wheel
At a certain location, the Earth's magnetic field has a magnitude of 5.1 x 10-5 T and points in a direction that is 67 deg below the horizontal. Find the magnitude of the magnetic flux through the top of a desk that measures 140cm by 70 cm
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