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A room is 25 C and 75% relative humidity. The size of the room is 5m x 5m x 3m. The crib is colled to 25 C and 20% humidity. Estimate the amount of water removed.
A pyrex beaker that holds 250 ml of water at 20 degrees celcius is filled to the brim. The system is heated to 40 degrees celcius, how much water (if any) will spill out of the beaker
A water balloon of volume 30 mL (30 x 10-6 m3) is lifted vertically a distance of 1 m in the earth's gravitational field. Calculate the change of potential energy of the balloon.
An asteroid, whose mass is 1.5 x 10-4 times the mass of Earth, find the period of revolution of the asteroidin years
A person drives a car around a circular cloverleaf with aradius of 59 m at a uniform speed of 10 m/s.
water skiers often ride to one side of the center line of a boat as shown in the figure . in this case the ski boat is
A sound wave in air has a frequency of 500 Hz and a wavelength of 0.68 m. What is the air temperature
In the Bohr model of the hydrogen atom, an electron (mass m=9.1×10?31kg) orbits a proton at a distance of 5.3×10?11m. How many revolutions per second does the electron make
a charge of 35.0 nc is placed in a uniform electric field that is directed vertically upward and that has a magnitude
After your sports car breakdown, you start to push it to the nearest repair shop. While the car is starting to move, how does the force you exert on the car compare to the force the car exerts on you? How do these forces compare when you are pushing ..
A reflecting telescope has a main mirror with fM = 620 mm. If an eyepiece with a magnification of 15 is used, what is the total magnification of the telescope
A Carnot engine operates between the temperatures 420 K and 300 K. How much heat must be given to the engine to produce 2500 J of work
A 119.0-kg block is on a horizontal frictionless surface, on top of it is a second smaller block of 55.0-kg. Find the coefficient of kinetic friction between the two blocks
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