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The lens and mirror in the figure below are separated by d = 1.00 m and have focal lengths of +81.7 cm and -48.3 cm, respectively. An object is placed p = 1.00 m to the left of the lens as shown.
(a) Locate the final image, formed by light that has gone through the lens twice. Distance ______ cm
(b) Determine the overall magnification of the image.
When only a resistor is connected across the terminals of an ac generator (117 V) that has a fixed frequency, there is a current of 0.490 A in the resistor. calculate the impedance of the series combination
A ball is thrown horizontally with a speed of 10.0m/s, from the edge of the top of a building of height 19.6m, What is the vertical component of the velocity just before the ball strikes the ground
two resistors are wired in series. the second resistor has twice the resistance as the first. current passes through
The reel has radius R and moment of inertia I. One end of the block of mass m is connected to a spring of force constant k, and the other end is fastened to a cord wrapped around the reel. The reel axle and the incline are frictionless. The reel i..
A playground merry-go-round of radius R = 1.60 m has a moment of inertia I = 275 kg · m2 and is rotating at 8.0 rev/min about a frictionless vertical axle. What is the new angular speed of the merry-go-round
An ice-skater moving at 1 x 10^1 m/s coasts to a halt in 1 x 10^2 meter on a smooth ice surface. Obtain coefficient of friction between ice and skates
If two sound waves, one in air and one in (fresh) water are equal in intensity, what is the ratio of the pressure amplitude of the wave in water to that of the wave in air? Assume the water and the air are at 20°C.
Determine the angular momentum of a hollow spinning sphere when its angular speed is 20 rad/s. The rotational inertia of the sphere is 0.02 kg.m2
Four ropes are tied to a stake, and each is pulled toward a compass direction, N, S, E, or W. What is magnitude of the net force exerted on the stake by the ropes?
Bob (m = 60kg) is wearing a sticky suit. Just as he reaches his desired speed of 6m/s, he reaches the edge of ice (assume the ice is frictionless) and collides with a large crate (m = 250kg). Bob and the crate stick together and slide along level gro..
An electron is in a certain energy state in a one-dimensional, infinite potential well from x = 0 to x = L = 175 pm. What is the change in the electron's energy
question a circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.30 t. the current in the loop is
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