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A wood cube 0.32m on each side has a density of 750 kg/m3 and floats levelly in water. What is the distance from the top of the wood to the water surface? Express your answer using two significant figures.
A car traveling at 21 runs out of gas while traveling up a 21 slope.How far up the hill will it coast before starting to roll back down.
The charge experiences a magnetic force of 7.41 10-3 N. A second charge q2 = 4.00 µC travels at an angle of 40.0° with respect to the same magnetic field and experiences a 1.80 10-3-N force. Identify the magnitude of the magnetic field and the ..
A 62-kg astronaut is in space, far from any objects that would exert a significant gravitational force on him. How fast is the astronaut moving after he throws the mallet
at a certain time a particle had a speed of 20 ms in the positive x direction and 2.2 s later its speed was 30 ms in
A speeder is pulling directly away and increasing his distance from a police car that is moving at 25 m/s with respect to the ground. Find the speeder's speed with respect to the ground
For a particle on in a box running between x=0 and x=1 the function cos[n π x] is not a satisfactory solution. The function cos[n π x/2] is a satisfactory solution for a particle in a box running between -1 and 1. Explain
Calculate the speed of a proton after it accelerates from rest through a potential difference of 160.
A ball is thrown horizontally from the top of a 55 m building and lands 105 m from the base of the building, How long is the ball in the air in seconds
The astronaut pushes on the satellite, giving it a speed of 0.25 directly away from the shuttle. Seven-and-a-half seconds later the astronaut comes into contact with shuttle.
George just graduated from college and is going on his first job interview. He has learned that there are two other candidates. Because of the information he has learned about the serial position effect, George asks to be either the first or the last..
Two horses pull a large crate of negligible mass at constant speed across a barn floor by means of two light steel cables. What is the work done by each horse if the box is moved a distance of 29 m
for a piece of material the steady-state flow across its thickness is 0.345x10-3 kgm2 h on the low pressure surface
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