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An object at distance (s) from a concave mirror of focal length (f) produces a real image at distance(s*) from the mirror. Suppose the mirror is replaced by a new mirror, at the same location, with focal length 1/2f. Will the new image be real or virtual? Will its distance from the mirror be more or less than ? Explain.
a 0.45 kg croquet ball is initially at rest on the grass. when the ball is struck by a mallet, how long was the mallet in contact with the ball
A proton is introduced at rest at a distance of 2 x 10^-14 from a bare nucleus of uranium, What is its kinetic energy in eV when it is expelled to infinity
A 0.50-?F and a 1.4-?F capacitor (C1 and C2, respectively) are connected in series to a20-V battery, lculate the potential difference across each capacitor? V1 and V2
Consider a circuit with two resistors in parallel; R1=10 Ohm and R2=5 Ohm, Calculate the total current flowing through the battery
A ball of mass 0.113 kg is dropped from a height of 1.92m above ground. The acceleration of gravity is 9.8m/s^2.Neglecting air resistance find the speed of the ball when it is at a height of 0.812 m above the ground. Answer in units of m/s.
When switch S in the figure is open, the voltmeter V of the battery reads 3.10V . When the switch is closed, the voltmeter reading drops to 2.96V, Find the emf
A platform is rotating with an angular speed of 3.00 rad/s and an angular acceleration of 11.0 rad/s2. what is the magnitude of the total acceleration a
An extremely thin film of soapy water (n=1.36) sits on top of a flat glass plate with n=1.11. What is the thickness of the film
Two point charges = 2.10 and = -6.40 are 0.100 apart. Point is midway between them; point is 0.080 from and 0.070 from. Take the electric potential to be zero at infinity.
The walls of a blackbody cavity are at a temperature of 27 degrees C. find the frequency of the radiation of maximum intensity
What is the greatest mass that can be accelerated upwards at 2.9 m/s2 if the stress in the cable is not to exceed the elastic limit of the cable, that is 2.2 108 Pa.
A 63.0 ?F capacitor is connected to a generator operating at a low frequency. The rms voltage of the generator is 4.00 V, at what frequency will the fuse burn out
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