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Problem: A spring has a length of .200 m when a .300 kg mass hangs from it, and a length of .750 m when a 1.95 kg mass hangs from it. What is the force constant of the spring, in N/m? What its the unloaded length of the spring in, in cm?
Earth's orbit around the Sun is nearly circular. The period is 1 yr = 365.25 days. In an elapsed time of 1.90 days, what is Earth's angular displacement? 3.27Ã x 10-2 rad. What is the change in Earth's velocity
a 85-kg sprinter accelerates from rest to a speed of 10.0 m/s in a 5.0 s. calculate the average power the sprinter must generate
A 2.29N force is applied to the plunger of a hypodermicneedle. with what force does the fluid leave the needle
The efficiency of a Carnot engine is e=1-Tc/TH, where Tc is a temperature of the cold reservoir and TH is a temperature of the hot reservoir.
How much time Tmelts passes before the ice starts to melt?
A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies of sound by 26.2 dB. The hearing aid picks up sound having a frequency of 250 Hz at an intensity of 2.40 10-11 W/m2. What is the intensity delivered ..
A small object is located 31.6{\rm cm} in front of a concave mirror with a radius of curvature of 39.0{\rm cm}. Where will the image be formed
A world record was set for the men's 100 m dash in the 2008 Olympic Games in Beijing by Usain Bolt of Jamaica. Bolt "coasted" across the finish line.
q1. a pot with a steel bottom 9.00 thick rests on a hot stove. the area of the bottom of the pot is 0.200. the water
an experimenter determines that when a beam of monoenergetic electrons bombards a sample of a pure gas atoms of the gas
AnLC circuit The 38 pF capacitor is initially charged by the 8 V battery when Sis at position a. Then S is thrown to position b so that the capacitor is shorted across the 18 mH inductor. What is the natural angular frequency of the circuit? What is ..
A tank of water 3.00m deep sits on a table 1.00 m tall. A hole is located 2.0m from the bottom of the tank. Water flows out of hole and strikes the ground. Where does it strike the ground.
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