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Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons.
(a) How many electrons are there in 5.66 liters of water? (1 liter is equivalent to 1.00 × 10-3 m3)
(b) What is the net charge of all these electrons?
At the start of a race, a four-man bobsled team pushes their sled as fast as they can along a 50 m flat starting stretch. What is the speed of the sled right before the team jumps on the sled
A transverse wave travels on a string of length 1.3 m and diameter 1.1 mm, What is the linear mass density of the string
A particular guitar string is supposed to vibrate at 200Hz, but it is measured to actually vibrate at 209Hz. By what percent should the tension in the string be changed to get frequency to the correct value.
In a study of proteins mediating cell membrane transport,microbiologists measure current versus time through the cellmembranes of oocytes (nearly mature egg cells) taken from theAfrican clawed frog,
A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at 60.0m/s, Find the horizontal component of the average force on the ball. Take the x-direction to be positive to the right
Fluid is flowing through a pipe at a rate of 100 gal/min. The inlet pressure is 20 psig and the outlet pressure is 0 psig. At what rate [Btu/(hR)] is entropy generated
The concrete wall of a building is 0.136 m thick. The temperature inside the building is 22.3 °C, while the temperature outside is 0.0 °C. What is the emissivity of the wall
You are constructing a fiber optic cable. You wish to surround the core of the cable with a cladding material such that the critical angle to go from the core to the cladding is 73.0°
The child then walks towards the center of the merry-go-round and stops at a distance 0.555 m from the center. Now what is the angular velocity of the merry-go-round
A motorboat is pointed due south, and its motor gives the boat a constant speed of 5.00 m/s through still water. Find the magnitude and direction of the boat's total velocity
A 2.3 kg pendulum bob is pulled out such that its center of mass is 0.26 m above its lowest point and released. What is the gravitational potential energy of the pendulum
Three equal positive point charges of magnitude Q = 6.00? C are located at three corners of a square of edge length d = 2.9 cm. A negative charge -18.00? C is placed on the fourth corner.
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