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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?
Consider an LR circuit like that displayed in Figure 6.6 in Activity 2-1 in your lab manual. You measure the current through the inductor as a function of time, What is the total resistance of the circuit
A 0.5970-kg ice cube at -12.40°C is placed inside a chamber of steam at 365.0°C. Later, you notice that the ice cube has completely melted into a puddle of water, calculate the final temperature of the puddle once it settled to equilibrium
Two lenses, one converging with focal length 21.0cm and one diverging with focal length ? 10.0cm , are placed 25.0?cm apart. Find the final image distance from second lens
q1. an electron moves with a horizontal velocity of 3106 ms as it enters a deflector inside a tv tube. the electron
The atomic mass of ammonia is 17 atomic mass units. What is the atomic mass of nitrogen if a molecule of ammonia consists of one atom of nitrogen and three atoms of hydrogen?
A person is standing on a level floor. His head, upper torso, arms, and hands together weigh 401 N and have a center of gravity that is 1.39 m above the floor. find the location of the center of gravity for the entire body
Calculate the speed of the second ship with respect to Earth if it is fired in the same direction the first spaceship is already moving
A golf ball, hit from the tee, travel 325 m in a direction 25 degrees south of the east axis. What are the east and north components of its displacement?
A 35.0-kg child swings in a swing supported by two chains, each 2.94 m long. The tension in each chain at the lowest point is 418 N. Find the child's speed at the lowest point
At a rock concert a dB meter registers 115 dB at a distance of 1.50 m from the stage, how far from the stage would you need to be to hear the concert at 90 dB
A bottle containing 2 kg of water at a temperature of 15°C is placed in a refrigerator where the temperature is kept at 4°C.
Two planes approach each other head-on. Each has a speed of 790km/h , How much time do the pilots have to take evasive action
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