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An object is placed to the left of a convex lens and on the optical axis. The object is 23 cm from the lens and the focal length of the lens is 57 cm. What is the magnification of the image formed by the lense?
A hand grenade is thrown with a speed of v0 30 m/s, and a 60 degree angle with x-axis, just prior to exploding. Find the velocity of the other piece after the explosion
A 5 kg block, measuring 10 cm per side, is held 50% submerged in water by a Helium balloon. If the density of Air is 1.18g/L, what is the diameter of the balloon
skier who, starting from rest, reaches a speed of 5.04 m/s when going down a slope for 4.21 s, How far does the skier travel in this time
A boy of mass 43.5 kg is initially on a skateboard of mass 2.00 kg, moving at a speed of 10.3 m/s. Find the final velocity of the skateboard
A certain red giant star has a luminosity of 100,000 times that of the Sun and is located 600 light-years from Earth. calculate the rate of interstellar extinction in the direction of the star
the solar constant is the radiant flux density from the sun at the earth's surface and is about 0.135 W/cm^2 when the sun is directly overhead, find the amplitude of the E and B fields
Illustrate what is the intensity of the beam transmitted through the three sheets when 1 = 19.0°, 2 = 51.0° and 3 = 100.0° ?
Draw vectors indicating the normal force. suppose that the weight of the femur is negligible compared to the applied downward force.
A certain lightbulb has a tungsten filament with a resistance of 18.0 when cold and 138 when hot. Find the temperature of the hot filament
A long straight wire suspended in the air carries a conventional current of 8.2 amperes in the ?x direction, What is the (vector) magnetic field due to the wire at the location of the electron
A baseball is hit at Fenway Park in Boston at a point 0.626 m above home plate with an initial velocity of 31.00 m/s directed 50.0° above the horizontal. find the vertical distance by which the ball clears the wall
A loudspeaker of mass 19.0 kg is suspended a distance of h = 2.00m below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of l= 3.50m. Illustrate what is the tension T in each of the cables?
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