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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 4 liters of water? (A liter is 1.00 10-3 m3) electrons (b) What is the net charge of all these electrons?
the shaft of a pump starts from rest and has an angularacceleration of 3.00 rad/s2 for 18.0s. find the angle through which the shaft has turned
A proton moves through a magnetic field at 25.9% of the speed of light. what is the magnitude of the magnetic force acting on the proton
After a tornado, a 0.55g straw was found embedded 2.6cm into the trunk of a tree. If the average force exerted on the straw by the tree was 70 N, what was the speed of the straw when it hit the tree.
A 1500 car traveling at 11 suddenly runs out of gas while approaching the valley shown in the figure. The alert driver immediately puts the car in neutral so that it will roll. What will be the car’s speed as it coasts into the gas station on the oth..
A circular disk with a radius of 0.65 meters and mass of 0.26 kg has a hole cut in the middle.
A 7.0 ?, a 15 ? and a 19.0 ? resistor are connected in series with a 24.0 V battery. What is the current in each resistor
A hockey player is standing on his skates on a frozen pond when an opposing player, moving with a uniform speed of 4.0 m/s, How long does it take him to catch his opponent
A homemade capacitor is assembled by placing two 10in pie pans 6cm apart, Estimate the electric field halfway between the plates
a box rests on the ice of a frozen pond. A man applies a horizontal force of 48 N to the box causing the box to accelerate at 3 m\s^2. What is the mass of the box
A spring stretches 4.1 cm when a 11 g mass is hung from it. If a total mass of 25 g attached to this spring oscillates in simple harmonic motion,how to calculate the period of motion.
a car moving at 80 km/hr is brought to a stop in 5 seconds. How far did the car travel while stopping
A 21.0 ohm bulb is connected across the terminals of a 12.0v- battery having 4.50 ohm of internal resistance. What percentage of the power of the battery is dissipated across the internal resistance and hence is not available to the bulb?
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