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If the humidity in a room of volume 430m3 at 30 degrees C is 75%, what mass of water can still evaporate from an open pan?
Record the resistance and current values calculated in questions 5, and load the numbers into a spreadsheet. Make a plot of the current I as a function of the total resistance R. (Remember that the R values will go on the x-axis and the I values o..
An elevator is rising at a constant speed, subject only to the tension (T) and gravitational (W) forces exerted on it by the cable above and the Earth below. As it rises, which force (if either) has a greater magnitude, T or W? Explain.
a girl is using a rope to pull a box that weighs 300 N across a level surface with constant velocity. what is the normal force of the floor on the box
A child is trying to throw a ball over a fence. She gives the ball an initial speed of 8.0 m/s at an angle of 40° above the horizontal. How far is the child from the fence
When a resistor is connected across the terminals of an acgenerator (115 V) that has a fixed frequency, there is a current of 0.665 A in the resistor. When an inductor is connected across the terminals of the same generator, there is a current of ..
to make ice a freezer that is a reverse carnot engine extracts 45 kj as heat at -14degc during each cycle with
A magnetic field of 0.436 T and a perpendicular electric field of5.54 kV/m act on a moving electron to produce no net force. Discover the speed of the electron. Give the answer in kilo-meter/second (km/s) and to two decimal places.
flash decides to make a capacitor at homes. Flash takes two thin, flat, rectangular aluminum plates measuring 35 cmby 50 cm. find the capacitance of flash's creation
you are designing a delivery ramp for crates containing exercise equipment. the crates of weight 1510 n will move with
A 2.4 gram penny is on a turntable. It starts from rest at a radius of 0.14 meters and the turntable speeds up until the penny flies off with a tangential speed of .88 m/s. What coefficient of static friction (to three decimal places) exists betwe..
A long straight wire suspended in the air carries a conventional current of 8.2 amperes in the ?x direction, What is the (vector) magnetic field due to the wire at the location of the electron
A tube is partially and vertically inserted into a container of water. Two sequential resonant frequencies are heard when a 215-Hz tuning is struck and held atop the end of the tube that is out of the water. What is the temperature of the surroundi..
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