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You are playing by a lens and you find that for a certain position of an object in front of it you can project the image on a screen. The image is twice the size of the object, Is the lenses convergent or divergent (concave or convex)? Is the image upright or inverted? Is the object distance greater than or lens than the lens focal distance?
a 26.79 g sample of a substance is initially at 23.6 c. after absorbing 1001 j of heat the temperature of the substance
An explosion breaks an object initially at rest into two pieces, one of which has 1.6 times the mass of the other. how much kinetic energy did the heavier piece acquire
A 15 kilogram mass slides down an inclined plane, which makes an angle of 37o with the horizontal. The coefficient of kinetic friction is 0.40. Estimate what is the acceleration of the mass
a beam of polarized light with an average intensity of14.8wm2is sent through a polarizer. the transmission axis makes
A weight of unknown mass is suspended from a steel wire that is 1.27 m long and has a diameter of 0.56 mm; Find the mass of the weight
a ferry boat is traveling in a direction 34.1deg north of east with a speed of 4.82 ms relative to the water. a
Two 1.50-V batteries-with their positive terminals in thesame direction-are inserted in series into the barrel of a flashlight. What is the lamp's resistance
What is the electrical force between a two charges that each has a charge value of .0004 C each that are 2 meters apart
If an electron is confined to a region of size 43.0 nm, what is the minimum possible uncertainty in its momentum? 1.22E-27 kg * m/s The nucleus of a hydrogen atom is a single proton. What fraction of a hydrogen atom is occupied by the nucleus
A plank 2.00 cm thick and 15.1 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. find the shear modulus of the wood
the flash unit in a camera uses a 2 battery to charge a capacitor. the capacitor is then discharged through a
A thin film of oil (n=1.24) is laying on a flat piece of glass (n=1.83). When viewed through air normal to the oil film, What is the minimum thickness of the oil film
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