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A ball with mass 450 grams hangs from a spring that is hanging from a ceiling. The spring's stiffness is 110 Newton’s/meter and its relaxed length hanging from the ceiling by the ball is 12.7 cm. What would be the relaxed length of the spring if the ball was detached and the spring was laid on a table?
Find a largest image that can be completely imaged on a 35mm film.
A 21 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 80.5 N and is directed at an angle of 30° above the horizontal. Determine the coefficient of kinetic friction.
A diverging lens (f = –12.0 cm) is located 19.0 cm to the left of a converging lens (f = 27.0 cm). A3.00-cm-tall object stands to the left of the diverging lens, precisely at its focal point.
What is the longest wavelength of light that can be absorbed by a hydrogen atom that is initially in the second excited state
Jack and Jill are standing on a crate at rest on the frictionless, horizontal surface of a frozen pond. Jack has a mass of 75.8kg, What is the final speed of the crate if both Jack and Jill jump simultaneously and in the same direction
The filament of a light bulb has a temperature of 2.8103°C and radiates 55 watts of power. The emissivityof the filament is 0.36. Find the surface area of the filament
The image of a very distant car is located 35 cm behind a convex mirror. What is the radius of curvature of the mirror
A total charge of 14 mC passes through a cross-sectional area of a nichrome wire in 1.4 s. I need to know how many electrons pass through the cross-sectional area in 23.0 s
1. an observer stands between two sound sources. source a is moving away from the observer and source b is moving
A soldier has a huge contraption that notches a large 4 kg arrow (it looks more like a lance) in a massive bow and uses a winch system to draw the arrow back to set the bow. What is the speed of the arrow
to examine a particular blood sample in biology lab a student uses a compound microscope set to have a magnification of
The sprint in spring gun has a force constant of 3.0 lb/in. It is compressed 1.5 in. from its natural lenght, with what speed will the ball leave the gun when released
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