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During a snowball fight, your opponent distracts you by throwing one at a high arc. She throws it with speed 25.5 m/s at an angle of 70 degreees. Then, she throws a second at a lower angle of 20 degrees.
If the second snow ball is going to hit you first, how soon after the first snowball is thrown must the second be thrown? In other words, what is the delay between the two throws that will have both arriving at the same time?
n lab tests on a 9.25cm cube of a certain material, a force of 1375N directed at 8.50degree to the cube, What is the shear modulus of the material
consider a solid sphere of radius 27 cm at a temperature of 61 degrees celsius. suppose the sphere is completely
two parallel plates of area 5 m2 are separated by a distance of 1.0 x 10-5m. they have charges on them of equal
A river flows at a speed of 12m/s from north to south. A powerboat can move at a constant maximum speed of 23 m/s in still water. find the maximum velocity of the boat traveling upstream
two stationary positive point charges charge 1 of magnitude 3.50nc and charge 2 of magnitude 1.60nc are separated by a
Florence, who weighs 120 lbs, stands on a bathroom scale in an elevator. What would the scale read when the elevator is accelerating downward at 2m/s2.
An automobile traveling at 15.0 km/h along a straight, level road accelerates to 65.0 km/h in 6.00 s. What is the magnitude of the auto's average acceleration
A pot of water is boiling under one atmosphere of pressure. Assume that heat enters the pot only through its bottom, What is the temperature of the heating element in contact with the pot
A solenoid is designed to produce a magnetic field of 2.50×10?2 at its center. It has a radius of 1.70 and a length of 44.0 , What total length of wire is required
A lens maker makes a lens with a material whose index of refraction is 1.44. Estimate the refractive power of the lens
Briefly describe how the resulting interference pattern will differ for the various types of particles passing through: protons, electrons, neutrinos (mass close to zero) and photons. Assume that the distribution of particle energies is the same f..
A space probe is fired as a projectile from the Earth's surface with an initial speed of 1.78 x 10^4 m/s. What will its speed be when it is very far from the Earth
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