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A railroad car containing explosive material is initially traveling south at a speed of 4.9 m/s on level ground. The total mass of the car plus explosives is 2.9 104 kg. An accidental spark ignites the explosive, and the car breaks into two pieces, which then roll away along the same track. If one piece has a mass of 1.9 x 104 kg and a final speed of 2.0 m/s toward the south, what is the final speed of the other piece?
A light meter stick is balanced at the 60 cm mark with a 200-g mass is hung from the 90 cm mark and a 100-g mass is hung from the 10 cm mark, Find the mass (in g) of the ruler
The electron makes a transition from the 1 to 4 level by absorbing a photon. Calculate the wavelength of this photon
a large 17 kg roll of paper with radius r=19cm rests against the wall and is held in place by a bracket attached to a rod through the center of the roll. compute the magnitude of the angular acceleration of the roll
compute the diameter of the bright circular spot formed.
A proton, an electron and an a particle, accelerated through the same potential difference enter a region of uniform magnetic field, moving at right angles to B. what are the radii of the proton and the a-particle path
question an ambulance is traveling east at 60ms. behind it there is a car traveling along the same direction at 34.3
Two geekie physics students with a combined mass of 122 kg jump into their old car to run out for some late night pizza. What is mass of the car
A glass windowpane in a home is 0.62 cm thick and has dimensions of 1.08 m × 1.86 m. On a certain day, the indoor temperature is 27°C and the outdoor temperature is 0°C. (Assume the thermal conductivity of the glass is 0.8 J/s · m · °C.)
What is the lowest frequency (in Hz) that will resonate in a 3 m length organ pipe, closed at one end (velocity of sound = 340 m/s) (b) What is the next highest frequency (2nd harmonic)?
a 4.1 g coin sliding to the right at 26.2 cms makes an elastic head-on collision with a 12.3 g coin that is initially
Light with a wavelength of 525 nm passes through a single slit that is 35 micro meters wide. On a screen that is 1.5 m away, how far is the second dark spot from the central bright spot
A weather emergency siren is mounted on a tower, 117 meters above the ground. On one hand, you would like to make the siren very loud so that it will warn as many people as possible.
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