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Q. A cardinal (Richmondena cardinalis) of mass 3.90×10-2 and a baseball of mass 0.144 have the same kinetic energy. What is the ratio of the cardinal's magnitude of momentum to the magnitude of the baseball's momentum?
Q. How fast should a car move toward you for the car's horn to sound 3.0% higher in frequency than when the car is stationary? The speed of sound is 343 m/s. Give your answer to the nearest 0.1 m/s.
If the density of conduction electrons is 10^27 m^3 and the wire has a radius of one millimeter, what is the electrical current through this wire
A 0.32-kg object connected to a light spring with a force constant of 22.4 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
A molecule is shown schematically. The distance from the center of the larger atom to the center of the smaller atom is d = 0.96, and the angle between the smaller atoms is θ = 105.6°. Find out the center-to-center distance between the smaller ato..
If you double a blackbody's temperature, by what factor does its radiated power increase
question1suppose you clarify two thin slits by monochromatic coherent light in air and find out that they create their
The gun on a battleship is at the surface of the water, and fires a 500 kg projectile with a muzzle velocity of 400 m/sec, What is the maximum range
nozzle of a hose is pointing straight up. the water rises to a height h above nozzle openig. how high does the water rise
An air conditioner operating between 86°F and 72°F is rated at 4000 Btu/h cooling capacity. What horsepower is required of the air conditioner motor
Two long parallel wires, each carrying a current of I = 4.0 A in the same direction, What is the magnitude of the Magnetic force per unit length between the wire
In a vertical dive a perefrine falcon can accelerate at 0.6 times the free-fall acceleration (that is 0.6 g) in reaching a speed of about 100 m/s. what is the radius of the turn
Two charges, -15 and +3.7 µC, are fixed in place and separated by 2.8 m. (a) At what spot along a line through the charges is the net electric field zero? Locate this spot relative to the positive charge. (Hint: The spot does not necessarily lie b..
Earthquakes generate sound waves inside Earth. Unlike a gas, Earth can experience both transverse (S) and longitudinal (P) sound waves, how far away did the earthquake occur
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