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A rocket is projected upward from the earth's surface (r = RE) with an initial speed v0 that carries it to a distance r = 1.2 RE from the center of the earth. What is the launch speed v0? Assume that air friction can be ignored.
An eagle with 1.8m wingspan flaps its wings 21 times per minute, each stroke extending from 42%u2218above the horizontal to 42%u2218 below. What's the average tangential velocity of the wingtip
a light spring having a force constant of 149is used to pull a 7.50 sled on a horizontal ice rink. the coefficient of
Suppose that you spend two full days in that cave. Approximately how many 222Rn atoms would enter into and out of your lungs during your two-day stay? Take the half-life of 222Rn to be 3.82 days. You will need to estimate your lung capacity and av..
500 grams of water initially at 3.00 c and a 10.0 gram ice cube at 0.00c are placed together in an insulated styrofoam cup of negligible heat capacity. find the final temperature of the contents of the cup
Suppose we have a cube of resistors (12 resistors total) all the same resistance R connects as in the figure to left. Find the equivalent resistance between the two diagonally opposite corners
A wire in which there is acurrent of 6.39 A is to be formed into a circularloop of one turn. what is the required radius
A 2 MeV deuteron strikes a 6Li3 nucleus. The compound nucleus splits into identical nuclides. calculate the COM kinetic energy of each
Object O1 is 14.5 cm to the left of a converging lens with a 12.0-cm focal length. What is the focal length of the second lens
The mysterious Planet X has a radius of 5.50 x 106 mand an acceleration due to gravity of 13.0 m/s2 at its surface. Calculate its mass and average density
A chartered airplane flies 100 km east, then 350 km northwest, and then 150 km at 30° west of south. After an additional displacement, the plane is back where it started. Find the magnitude and the direction of the last leg of the journey.
An ore sample weighs 17.50 in air. When the sample is suspended by alight cord and totally immersed in water, the tension in the cord is11.20 Newton. Find what is the density of the sample
A toy airplane is tied to the ceiling with a string. When the airplane's motor is started, it moves with a constant speed of 1.03m/s in a horizontal circle. If the angle the string makes with the vertical is 27°, and the tension of the string is 1N.
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