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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 8.94 liters of water? (1 liter is equivalent to 1.00 x 10-3 m3)
(b) What is the net charge of all these electrons?
A pair of flat mirrors meet to form a right angle. A beam of light is incident on one of them at a point 11.5 cm from their point of intersection, find what is the angle of incidence at the first mirror
Two small plastic balls hang from threads of negligible mass. Each ball has a mass of 0.57 g and a charge of magnitude q. Find the magnitude of the electric force acting on the ball
During basketball tryouts, Umass walk-on hopeful Dwayne Madison stole a pass at his own free throw line. He then spring straight down the court to the opponent's free throw line, What was his avg velocity
A weather balloon is designed to expand to a maximum radius of 17 m when in flight at its working altitude where the air pressure is 0.034 atm, what is its radius at lift-off
question1an airplane starting from airport a flies 300 km east then 305 km at 24.5deg west of north and after that 150
A 950kg sports car collides into the rear end of a 2500kg SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 2.6m before stopping. The police officer, knowing that the coefficient of kinetic friction be..
A mass on a spring vibrates in simple harmonic motion at a frequency of 4.0 Hz and an amplitude of 8.0 cm. what is the displacement of the mass when t = 3.7s
You drive 110 km/h east for 35 min, then 83 km/h north for 46 min. Find your average velocity for the entire trip
An electric eel develops a 460V potential difference between its head and tail. What is the energy delivered by this pulse
a 3,000-kg vehicle collides with a 1,000-kg stationary vehicle. What was the speed of the 3,000-kg vehicle
White light is incident normally on a thin soap film ( = 1.33) suspended in air. What are the two minimum thicknesses that will constructively reflect yellow ( = 577 ) light? Enter your answers in ascending order separated by a comma
The telescope at a small observatory has objective and eyepiece focal lengths of 16.0 m and 12 cm, respectively. determine angular magnification of the telescope
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