Physics, 21.12.2019 06:31, samanthablain192
A1.53-kg piece of iron is hung by a vertical ideal spring. when perturbed slightly, the system is moves up and down in simple harmonic oscillations with a frequency of 1.95 hz and an amplitude of 7.50 cm. if we choose the total potential energy (elastic and gravitational) to be zero at the equilibrium position of the hanging iron, what is the total mechanical energy of the system?
a. 0.844 jb. 0.646 jc. 0.000 jd. 0.955 je. 0.633 j
Answers: 1
Physics, 22.06.2019 16:50, Walkman2092
Calculate the first and second velocities of the car with four washers attached to the pulley, using the formulas v1 = 0.25 m / t1 , and v2 = 0.25 m / (t2 – t1) where t1 and t2 are the average times the car took to reach the 0.25 and the 0.50 meter marks. record these velocities, to two decimal places, in table e.
Answers: 2
Physics, 22.06.2019 23:30, codnernae2423
An electric power distributor charges residential customers $0.10 per kilowatt-hour (kwh). the company advertises that "green power" is available in 150 kwh blocks for an additional $4 per month. (green power is generated from solar, wind power, and methane sources.) if a certain customer uses an average of 391 kwh per month and commits to one monthly 150 kwh block of green power, what is her annual power bill
Answers: 1
Physics, 23.06.2019 00:50, Madisonaubrey22
A980-kg sports car collides into the rear end of a 2300-kg suv stopped at a red light. the bumpers lock, the brakes are locked, and the two cars skid forward 2.6m before stopping. the police officer, estimating the coefficient of kinetic friction between tires and road to be 0.80, calculates the speed of the sports car at impact. what was that speed?
Answers: 3
A1.53-kg piece of iron is hung by a vertical ideal spring. when perturbed slightly, the system is mo...
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