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Two masses, m1 and m2 are connected by a cord and hang straight down from either side of a light frictionless pulley. The mass of m1 is three times that of m2. What is the acceleration of the system?
It costs 2.5 cents to charge a car battery at a voltage of 12 V and a current of 13 A for 120 minutes. What is the cost of electrical energy per kilowatt-hour
Find the difference in decibel levels β1 & β2 of a sound source is related to the ratio of its distances r1 & r2 and find the average power generated by the horn.
The ground state energy of a harmonically oscillating electron is 1.24 eV. How much energy should be added to the electron to move it to the second excited state.
A right circular cylinder has radius of 1cm and contains Hg ( d= 13.596 kg/l), Determine length of mercury column and length of water column
A spring is initially compressed by 17.5 cm. If it takes 7.166 J of work to compress the spring an additional 3.5 cm, what is the spring constant of the spring
What is inductance of the solenoid
A ball (m=1kg) is dropped from a height of 3 m. Assume no air resistance. After it bounces off the ground it only reaches a height of 2 m. What is the balls change in energy
A 70-kg ski jumper starts from rest 59 m above the ground on an icy track and flies off the track at an angle of 31°, With what speed does the skier leave the track
A golf ball of mass 50 g released from a height 1.5m above a concrete floor bounces back to a height of 1.0 m. What is the amount of energy lost during the impact
A heart defibrillator passes 11.8 A through a patient's torso for 5.00 ms in an attempt to restore normal beating. What was the path's resistance
The work function for potassium is 2.24 eV. If potassium metal is illuminated with light of wavelength 300 nm
Given a sphere of charge inside a conductor. The sphere has a radius of 5cm. Find the charge on the outisde of the conductor
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