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When a concave mirror is located facing the sun, the suns rays converge to a point 10 centimeter from the mirror. Now, an erect, 2-centimeter long pin is located 15 centimeter away on the principal axis of the mirror. If you want to get the image of the pin on a card, where would you place the card? Estimate what would be the nature and height of the image?
An air-filled parallel plate capacitor with a plate spacing of 1.20 cm has a capacitance of 4.30, Calculate the dielectric constant of the inserted material
Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 1.80e28 kg and 1.60e3 m. Find the density of such a star
starting from rest, a solid steel sphere rolls from the top of an incline to the bottom, reaching a translational speed of 2.05m/s. ignore friction loss. what is the height of the incline
q1. the potential at location a is 393 v. a positively charged particle is released there from rest and arrives at
Consider a rock that is thrown off a bridge of height 26 m at an angle = 21° with respect to the horizontal, find the the time at which the rock lands
question the largest transformer ever built handles a power of 1.50x109 w. this transformer is used to step down 765
A 7.50kg shell at rest explodes into two fragments, one with amass of 3.00kg and the other with a mass of 4.50kg. how much kinetic energy does the lighter one gain
A high diver of mass 80.0 kg jumps off a board 10.0 m above the water. what average upward force did the water exert on him
A skier (m=63.0 kg) starts sliding down from the top of a ski jump with negligible friction and takes off horizontally. Find her total kinetic energy as she reaches the ground
A gas at a temperature of 382 K, a pressure of 197 kPa and occupying a fixed volume of 0.38 m3, is heated so that the temperature of the gas rises by 34 K. What is the pressure of the heated gas? Give your answer in pascals.
When a65.0-V emf device is placed across two resistors in series, a current of 10.0 A is flowing in each of the resistors. When the same emf device is placed across the same two resistors in parallel, the current through the emf device is56.0A. What ..
A walkway suspended across a hotel lobby is supported atnumerous points along its edges by a vertical cable above eachpoint and a vertical column underneath. through what distance does the point move down
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