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A 2.0kg puck travelling due east at 2.5 m/s collides with a 1.0 kg puck travelling due south at 3.0m/s. They stick together on impact. What is the resultant direction of the combined pucks?
While driving behind a car traveling at 5.95m/s, you notice that a tire has a hemispherical bump on its rim. What is the bump's period of oscillation
A very thin sheet of plastic (n=1.65) covers one slit of a double-slit apparatus illuminated by 640nm light. What is the (minimum) thickness of the plastic
An initially uncharged electroscope is polarized by bringing a negatively charged rubber rod near the bulb. If the bulb end of the electroscope acquires a net charge of +2.60pC , how many electrons are on the leaf end
A bat emits a sound whose frequency is 70.9 kHz. The speed of sound in air at 20.0 oC is 343 m/s. However, the air temperature is 40.4 oC, find the wavelength of the sound
If a guitar string has a tension of 20 newtons and has a mass per unit length of 9.8x10^-4 kg/m, with what speed does a pulse travel down the string
Two small metal spheres with masses 2 gram and 4 gram are tied together by a 4.6 centimeter long mass less string and are at rest on a frictionless surface. Compute what is the energy of this system
An airplane with a mass of 2.6*10^6 kg. has the air flow past the lower surface of the wings at 100 m/s. If the wings have a surface area of 1200 m2, how fast should the air flow over the upper surface of the wing if the plane is to stay in the ai..
A light ray is traveling toward an interface between sapphire, n= 1.76, and water, n= 1.33. What is the critical angle for total internal reflection
Two bright fringes span a distance of 1.8 cm. What is the wavelength (in nm) of the light?
A swimmer, capable of swimming at a speed of 1.0 m/s in still water (i.e., the swimmer can swim with a speed of 1.0 m/s relative to the water), How long does it take the swimmer to cross the river
A test rocket is fired vertically upward from a well. A catapult gives it an initial velocity of 79.5 m/s at ground level. Subsequently, its engines fire and it accelerates upward at 4.10 until it reaches an altitude of 920 m. At that point its engin..
The ball then rolls along the flat part of the table and rolls off the end of the 1.5 m tall table. Assuming that the marble experiences no air resistance, how far from the edge of the table (horizontally) will the marble hit the floor?
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