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You have a string with a mass of 0.0141 kg. You stretch the string with a force of 9.09 N, giving it a length of 1.81 m. Then you vibrate the string transversely at precisely the frequency that corresponds to its fourth normal mode, that is, at its fourth harmonic. What is the wavelength of the standing wave you create in the string? What is the frequency?
Apollo 11 (total mass 43,100 kg) was in an orbit 11 km above the surface of the moon. What was the speed of Apollo 11 while it was orbiting the moon
You have a 6kg cart that has a spring attached to the front. You hold the cart so the spring is compressed against the wall. What is the total work done by the spring on the cart
Algol consists of a 3.7 MSun main-sequence star and a 0.8 MSun subgiant. Why does this seem surprising, as a minimum at first.
A galvanometer with a coil resistance of 14.1 is used with a shunt resistor to make a nondigital ammeter that has an equivalent resistance of 0.755. Find the full-scale current of the galvanometer
A planet with mass 7 x 1024 kg orbits a sun with a period of 1 Earth's years. The speed of the planet around that sun is constant and |v|=49600 m/s
Suppose that while moving into an apartment you move a refridgerator into place by sliding it across the floor. What is the least force you could exert on the fridge to move it
What will be the total horizontal distance traveled by the ball? What is the velocity of the ball (magnitude and direction) the instant before it hits the ground? That is what is its i-component? What is its j-component?
A rectangular block of ice 12 m on each side and 1.3 m thick floats in sea water. The density of the sea water is 1025-kg/m3. The density of ice is 917 kg/m3. How many penguins of mass 26 kg each can stand on the ice block before they get their fe..
Someday in the future, an astronaut on Mars (where gMars = 3.71 m/s^2) might lean over the edge of 25.0-meter-tall spacecraft , What will be the package's speed when it strikes the ground
A ballerina spins initially at 1.5 revolutions/second when her arms are extended. Determine her initial moment of inertia
How much kinetic energy is lost in the collision. compute the focal length of the mirror.
The desperate contestants on a TV survival show are very hungry. The only food they can see is some fruit hanging on a branch high in a tree. With what speed does the rock leave the spring
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