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When a switch is closed, the current in a wire is given as i(t)= 1.0Aexp(-.5t).
a) How much charge flows out 2.0s after the switch is closed?
b) How much charge will flow out if the switch is closed forever?
At a reception, a 0.5 kg chunk of ice at -10 degres Celsius is placed in 3.0 kg of "iced" tea at 20 degrees Celsius. At what temperature and in what phase will the final mixture be
An elevator is moving upward with a speed of 11 m/s.Three seconds later, the elevator is still moving upward, but its speed has been reduced to 5.0m/s what is the average acceleration of the elevator during the 3.0 s interval
Mike is a 70 kg pole-vaulter. He falls froma peak height of 5.9 m after pole vaulting over a crossbar set at that height. He lands on a thick mat. What average force was exerted by the mat on Mike during this impact
Four point charges, Q1(-15,0,15), Q2(15,0,15), Q3(15,0,-15) and Q4(-15,0,-15) in cartesian coordinates are surrounded with air. If charges Q2 = -Q3 = 2 microCoulomb, Find the forces applied to each point from other charges
A damped mass-spring system oscillates at 265 -Hz. The time constant of the system is 2.0 s. At t = 0, the amplitude of oscillation is 6.1 cm and the energy of the oscillating system is then 61.00 J.
Two identical 3.00-ohms wires are laid side by side and soldered together s they touch each other for half of their lengths. What is the equivalent resistance of this combination
The muon is a subatomic particle with the same charge as an electron but with a mass that is 207 times greater: mmu=207me. Physicists think of muons as "heavy electrons."
A laser beam is incident on a 600 lines per millimeter diffraction grating. determine angular deflection of the first-order bright fringe
A solid cylinder with a radius of 4.0 {rm cm} has the same mass as a solid sphere of radius R. If the cylinder and sphere have the same moment of inertia about their centers, illustrate what is the sphere's radius?
A physics professor is pushed up a ramp inclined upward at an angle 28.0 above the horizontal as he sits in his desk chair that slides on frictionless rollers. Use the work-energy theorem to find his speed at the top of the ramp
A weight of 45.0 N is suspended from a spring that has a force constant of 220 N/m. Determine the maximum value of the driving force
When a potential difference of 140V is applied to the plates of an air-filled parallel-plate capacitor the plates carry a surface charge density of 4.20E-10
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