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A sunbather lying on a floating raft that experiences no friction with the water gets up and walks to the western end of the raft. While she is walking, how does the center of gravity of the system composed of her and the raft move? Why? If the mass of the raft is 10 times that of the sunbather's mass, in which direction and about how fast does the raft move in terms of the sunbather's speed?
You observe that a solid cube of some material floats on the surface of an oil puddle at a service station with 68.7% of its volume submerged. What is the density of the cube\'s material
A high fountain of water is located at the center of a circular pool, A student walks around the pool and estimates its circumference to be 196 m. How high is the fountain
The bones of a saber-toothed tiger are found to have an activity per gram of carbon that is 14.5 % of what would be found in a similar live animal
The atomic planes in a crysral are spaced d = 0.50 nm apart. These planes are used in a diffraction experiment with X-rays with ? = 0.05 nm. What are the diffraction angles for the first three bright fringes
(a) What is the x component of the net electrostatic force on particle 3. (b) What is the y component of the net electrostatic force on particle 3
A transparent oil with index of refraction 1.29 spills on the surface of water (index of refraction 1.33), determine the thickness of the oil slick
Using the Bohr model what is the radius of the electron orbit in the Hydrogen atom when the electron is in the n = 9 state? What is the energy of the Hydrogen atom
What are the x and y components of the shell.
q1. identical samples containing 32p are measured for a period of 1 hr in a counter having an efficiency of 44 percent
An ice chest at a beach party contains 15 cans of soda at 3 ° C. Each can of soda has a mass of 0.38 kg, determine the final temperature T of the soda and watermelon
A student standing on the ground throws a ball straight up. How long is the ball in the air before it hits the ground
150 g of ice at -10.5 oC is raised to the melting point and then raised to 76.0 oC. How much heat is added to the system
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