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An object 3.9 mm high is on the optical axis of two lenses with focal lengths f1 = +5.0 cm, f2 = +10 cm. The object is 6.1 cm to the left of the first lens, and the second lens is 33 cm to the right of the first lens. Find the position (relative to the second lens) and the size of the final image by calculation.
A 67.6 kg person jumps from rest off a 2.91 m-high tower straight down into the water. Neglect air resistance during the descent. Determine the magnitude of the average force
A Pyrex beaker that has a capacity of 1000cm3 at 20!C contains 990cm3 of mercury at that temperature. Is there some temperature at which the mercury will totally fill the beaker? Justify your answer (i.e., show this mathematically). Suppose that no m..
At one time, television sets used "rabbit-ears" antennas. Such an antenna consists of a pair of metal rods. How long is each rod
The distance to a star is approximately 7.60 x 1018 meter. If this star were to burn out today, in how many years would we see it disappear? Find how long does it take for sunlight to reach Mars
A future space craft coincidentally finds itself at momentary position where its force of gravitational attraction. How far away is the vehicle from the centre of the Earth?
How many turns of wire would be required to make a 130-mH inductor out of a 29.0-cm-long air-filled solenoid with a diameter of 5.1cm ?
A box-shaped piece of concrete measures 3ft by 2ft by 0.5ft. Find the buoyancy force that acts on it when it is submerged in water
In the nineteenth century, astronomers believed that the Sun was slowly shrinking and that the compression of its internal gas was the source of its heat. Given that the Sun's luminosity is approximately 3.8x10^ (33) gm, what is wrong with this idea?..
Liquid helium is stored at its boiling point temperature of 4.2K in a spherical container (r=0.30 meter). The container is a perfect blackbody radiator. Calculate what mass of liquid helium boils away through a venting valve in 1 hour
A plane, diving with constant speed at an angle of 49.0° with the vertical, releases a projectile at an altitude of 560 m. The projectile hits the ground 6.00 s after release.
A barbell spins around a pivot at its center . The barbell consists of two small balls, each with mass m = 460 grams, at the ends of a very low mass rod whose length is L = 24 cm. The barbell spins with angular speed ω = 50 radians/s.
An electron in a multi-electron atom has l=3. Find what values of its other quantum numbers (n, m1,ms) are possible
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