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An object, if located at a distance of 0.5 meter from a mirror, produce an image at a distance of 30 centimeter behind the mirror. Find what sort of mirror it is? Obtain focal distance of this mirror and magnification.
If you twirl a small 7.0-g wooden ball in a circle at 4.0 revolutions per second on a light 10-cm string, approximately how many units of angular momentum does it have
a box with a side of length L=3.00cm is positioned with one of its corners at the origin of a rectangular coordinante system. What is the electric flux through the bottom of the box
From the ground a projectile is fired with a velocity of 30m/sat 30 degrees above the horizontal. How long will the projectile take to return to the ground
A factory employee pushes a 35 kilogram crate across the floor by applying a 600 N push at a 30o angle above the horizontal. Compute how much work does the friction do on the crate
a 30 kg block on a frictionless surface experiences two perpendicular forces in the x and y directions. if the force in
You throw a 1kg ball out of a window 12 m above the ground. It lands 5 m from the building after 1 s. ignore air resistance, How fast was it traveling when it hit the ground
A 81-kg fullback is running at 3.3m/s to the east and is stopped in 0.85s by a head-on tackle by a tackler running due west. Calculate the original momentum of the fullback
A source delivers an AC voltage of the form ?v = 80.6 sin (78?t), where ?v is in volts and t is in seconds, to a capacitor. The maximum current in the circuit is 0.520A.
A submarine is 304 m horizontally out from the shore and 126 m beneath the surface of the water. A laser beam is sent from the sub so that it strikes the surface of the water at a point 232 m from the shore. If beam just strikes the top of a building..
An object is 100 cm in front of a concave mirror that has a radius of 80 cm. Calculate the image distance and lateral magnification
A flint glass plate (n = 1.66) rests on the bottom of an aquarium tank. The plate is 11.00 cm thick (vertical dimension) and covered with water (n = 1.33) to a depth of 12.5 cm. Calculate the apparent thickness of the plate
using a rope a child holds a sled at rest on a 30.0 degree inclined frictionless snow-covered hill.a if the sled weighs
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