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A model rocket is constructed with a motor that can provide a total impulse of 36.0 N·s. The mass of the rocket is 0.164 kg. What is the speed that this rocket achieves when it is launched from rest?
The sound level, ß, measured at a radius r = 11.00 meters from a point sound source that is emitting sound equally in all directions is 95.17 dB, what is the sound power emitted by the source
Monochromatic light of a given wavelength is incident on a metal surface. However, no photoelectrons are emitted. how should the incident light be adjusted
A rifle with a barrel length of 59cm fires a 10g bullet with a horizontal speed of 440m/s. How long does it take the bullet to come to rest after entering the wood
A steam locomotive uses the back-and-forth motion of a drive rod to turn its 1.55 m diameter wheel. Each compete oscillation of the rod corresponds to one wheel revolution.What's the rod's oscillation frequency when the train is moving at 30 m/s ?
Two positive charges of 7.40 micro-Coulombs are placed on a horizontal surface with a coefficient of static friction 0.72. If they are originally far apart.
A series RLC circuit is driven by a generator at a frequency of 2280 Hz and an emf amplitude of 189 V. The inductance is 61.1 mH, the capacitance is 0.426 ?F, and the resistance is 219 ?. (a) What is the phase constant in radians? (b) What is the cur..
a 25-kg iron cannonball is fired with speed 220 m/s. If it hit a concrete wall, how much does the temperature of the cannonball increase
A person sitting at a desk which is 51.2 m east and 9.9 m north of the point mid-way between the alarms does not hear them when they sound. What is the lowest frequency that the alarms can be sounding
114.0 g of water is heated using 67.0 W of power with perfect efficiency. How long will it take to raise the temperature of the water from 15 C to 25 C
What is the total emitted power and the net power loss due to radiation of a human body with a surface temperature of 36 degree C? Assume that the surface area of the body is 1.5m2 and the temperature of the surroundings is 20 degree C.
The bremsstrahlung x-ray spectrum of both Moand W cut off (have zero intensity) at about 0.035 nm. X rays with this wavelength are produced by the target element when bombarding electrons are promptly stopped in a single collision and give up all ..
A visitor to a lighthouse wishes to determine the height of the tower. She ties a spool of thread to a small rock to make a simple pendulum, What is the height of the tower
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