A 0.50-kg toy is attached to the end of a 1.0-m very light string. The toy is whirled in a horizontal circular path on a frictionless tabletop
If the maximum tension force that the string can exert on an object without breaking is 350 N, what is the maximum speed the toy can have without breaking the string? A) 700 m/s
B) 26 m/s
C) 19 m/s
D) 13 m/s
B
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Momentum: A satellite with a mass of 200 kg and a speed of 0.800c and a second satellite with a mass of 100 kg and a speed of 0.600c are traveling toward each other in deep space. The satellites collide and somehow manage to stick together. What is the speed of the combined object after the collision?
A. 0.333c B. 0.374c C. 0.397c D. 0.418c E. 0.432c
Power: The power rating of a 400-? resistor is 0.800 W.(a) What is the maximum safe voltage across this resistor?(b) What is the maximum current the resistor can safely draw?
What will be an ideal response?
What is the symbol traditionally used to represent wavelength?
a. wl c. ? b. y d. ?
An x-ray photon with wavelength 15.0 pm is scattered at 
by an electron. What is the wavelength of the scattered photon?
A. 31.0 pm B. 14.9 pm C. 1.57 pm D. 17.2 pm E. 12.8 pm