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How many drops of water are in all the oceans on earth? Assume that contains 25 drops of water. Remember that this is an order-of-magnitude problem, so you should expect that you will only find rou
The acceleration of a motorcycle is given by ax(t) = At - Bt2, where A = 1.20 m/s3 and B = 0.120 m/s4. The motorcycle is at rest at the origin at time t = 0. Find its position as a function of time
If you do 14 J of work to push 0.003 C of charge from point A to point B in an electric field, what is the voltage difference between points A and B?
Suppose a salmon swimming in still water jumps out of the water with a speed of 6.26 m/s at an angle of 45°, sails through the air a distance L before returning to the water, and then swims a d
What is the molecular mass of the gas? the gas expands so that the cylinder has twice the height. How much work did the gas do assuming the pressure remained constant?
Find the gauge pressure at the bottom of the tank. Calculate the force that acts on a square access hatch at the bottom of the tank that measures 0.25m by 0.25m.
A boat moves through the water of a river at 9 m/s relative to the water, regardless of the boat's direction. If the water in the river is flowing at 1.9 m/s, how long does it take the boat to make
A stone is thrown at a bell with a speed of 20.0 m/s. The stone strikes the bell and the sound is heard 2.60s after the stone was released. Speed of sound is 342m/s, how far is the boy from the bel
How much work must be done on the electron to move it to the negative plate if it is initially positioned 2.86 mm from the positive plate?
Demonstrate that in the limit ν → 2 ω0 the solution to the damped harmonic oscillator equation becomes
A gymnast of mass 66.0 kg hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and assume that the rope does not stretch. Use the value 9.81 for the acceleration
What are the components and length of a vector which is the sum of the two vectors, V1 and V2, whose components are (1.4, 1.0, -15.0) and (1.7, -4.9, 0.0)?
A ball rolls horizontally off the edge of a tabletop that is 1.08 m high. It strikes the floor 2.80 m away from the edge of the table. What is the initial (horizontal) velocity of the ball? Ignore
Suppose that you hear a clap of thunder 15.4 s after seeing the associated lightning stroke. The speed of sound waves in air is 343 m/s and the speed of light in air is 3.00 108 m/s. How far are you
A subway train has three cars, each weighing 1.20 x 105 N. The frictional force on each car is 103 N, and the first car, acting as an engine, exerts a horizontal force of 4.80 x 104 N on the rails.
Suppose you are an astronaut and you have been stationed on a distant planet. You would like to find the acceleration due to the gravitational force on this planet so you devise an experiment.
Two people are each standing 3.0 m in front of a large plane mirror and are spaced 6.0 m apart. At what angle of incidence should one of them shine a flashlight on the mirror so that the reflected b
Bonnie and Clyde are sliding a 291 kg bank safe across the floor to their getaway car. The safe slides with a constant speed if Clyde pushes from behind with 375 N of force while Bonnie pulls forwar
A railroad car of mass 2.9 104 kg moving at 3.50 m/s collides and couples with two coupled railroad cars, each of the same mass as the single car and moving in the same direction at 1.20 m/s. How mu
By directly experiencing a thunderstorm, we learn that a flash of lightning signals an impending crash of thunder. This best illustrates
Compare the tension in the coupling betwenn the first two and the last two cars of a train when the trains speed is constant
A cube of ice is taken from the freezer at -9.0C and placed in a 92 g aluminum calorimeter filled with 324 g of water at room temperature of 20C. The final situation is observed to be all water at
A Cessna aircraft has a liftoff speed of 120 km/h. (a) What minimum constant acceleration does the aircraft require if it is to be airborne after a takeoff run of 300 m?
Planet Z is 8,000 km in diameter. The acceleration due to gravity on Planet Z is 7.0 m/s2. What is the acceleration due to gravity 10,000 km above Planet Z's north pole?
Two parallel plates, each with an area of 110 , are given equal and opposite charges of magnitude 0.180. The space between the plates is filled with a dielectric material, and the electric field wi