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When an object is placed 60 centimeter from a certain converging lens, it forms, a real image. When the object is moved to 40 centimeter from the lens, Determine what the focal length of this lens. Include a ray diagram.
Assuming that air resistance is simply a constant 91 N force on the person during the fall, identify the person’s velocity just be- fore hitting the net.
Assume two clowns on skateboards are standing motionless on a smooth surface 10.0 m apart. Clown B tosses a 5.0 kg medicine ball to clown A. The medicine ball is traveling with a speed of 7.5m/s.
explain in what ways mechanical work is and is not related to caloric expenditure.include in your answer the
An aluminum wire with a cross-sectional area of 3.9 x 10^(-6) m^2 carries a current of 1.9 A. Find the drift speed of the electrons in the wire
In a science museum, a 130kg brass pendulum bob swings at the end of a 13.7m -long wire. how many oscillations will the pendulum have completed
A small insect viewed through a convex lens is 1.6 cm from the lens and appears twice its actual size. What is the focal length of the lens
A two-stage rocket moves in space at a constant velocity of 4900 m/s. What is the velocity of the 2400 kg lower stage after the explosion
A man driving a car toward a large vertical wall sounds his horn. The car is traveling at 92 km/h. What is the frequency of the car's horn
A long rod of lenght " L " and cross sectional area "A" is weighted such that when it is placed in a bucket of water it floats vertically. determine the magnitude of the buoyant force on the rod
question what mass in grams of hydrogen is produced by the reaction of 4.73 g of magnesium with 1.83 g of
a spherical gaussian surface is drawn inside a spherical object as shown. upon inspection no net charge exists within
Which of the following devices use a diffraction grating in order to function?
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