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Find the change in gravitational potential energy of a 1.8 kilogram object which is displaced vertically a distance of 2.7 meters?
Find the minimum aperture diameter of a camera that can resolve detail on the ground the size of a person (1.5m ) from an SR-71
An object is dropped from the top of a tower at a height of 44.1 m. How much time does the object take to reach the ground
a golf ball rolls off a horizontal cliff with an initial speed of 14.8 ms. the ball falls a vertical distance of 12.5 m
Three thin uniformly charged shells A, B and C, with radii R, 2R , 3R respectively are placed one inside the other, What is the electric potential at radius 2R
An object is projected horizontally with a speed of 12 m/s and lands 120m from the launch site. What vertical height was it launched from
It has been suggested that we should use our power plants to generate energy in the off-hours (such as late at night) and store it for use during the day. What length of flywheel would you need in that case
A dentist uses a concave mirror (focal length 4 cm) to examine some teeth. If the distance from the object to the mirror is 0.81 cm, what is the magnification of the tooth?
An air molecule is moving at a velocity of 444 m/s. How various meters would the molecule move during 7.00 ms (milliseconds) if it didn't collide with any other molecules.
David is driving a steady 21.0m/s when he passes Tina, who is sitting in her car at rest. How far does Tina drive before passing David
Amy (60kg) initial velocity of 7.5 m/s is skating towards bob (90kg) and initial velocity of 4 m/s. determine amys final speed and percent of kinetic energy lost in the collision
a ray of light traveling through air encounters a 1.4 cm-thick sheet of glass at a 38 degree angle of incidence.how far
If 16 students lift a car . While holding the car off the ground, each person exerts an upward force of 400 N. What is the weight in pounds
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