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The weight that will cause a wire of diameter d to stretch a given distance, for a fixed length of wire, is proportional to what?
A basketball player is balancing a spinning basketball on the tip of his finger. The angular velocity of the ball slows down from 18.5 to 14.1 rad/s.
Verify that the gravitational force - GMmr/r2 on a point mass m at r, due to a fixed point mass M at the origin.
A lunar landing craft needs to hover just above the surface of the moon, which has a gravitational acceleration of (1/6) g.
A car has been traveling up along a 2 percent grade at a constant speed of 55 miles/hr.
The coefficient of kinetic friction between the player and the ground is 0.220. What is his speed when he reaches the plate?
Determine its speed when it is at point B. Also determine the sudden decrease in speed the rocket must experience at A in order to travel in a Circular orbit.
Which aspect of Newtonian relativity requires U to depend only on the separation vector x1 – x2?
In its own reference frame, it forms an angle of 45 degrees with its velocity. What is its length as measured by a fixed observer?
If the acceleration of an object is positive, it is speeding up. If the acceleration of an object is negative, it is slowing down.
Consider a particle described by the Cartesian coordinates (x, y, z) = x and their conjugate momenta (px, py, Pt) = p .
Review physical and chemical properties of water. How might changes in temperature affect cellular function? How might water pollution affect cellular function?
The basic function, design, and operation of semiconductor lasers.
You push with a 50-N horizontal force on a 10 kg mass resting on a horizontal surface against a horizontal friction force of 20N. What is the acceleration?
Moe, Larry, and Curly sit in a line with a spacing of 1.00 m. Larry is d1 = 3.0 m in front of a pair of stereo speakers d2 = 0.800 m apart, as shown.
A magnifying glass is a single convex lens with a focal length of f = +11.0 cm.
With unaided vision, a librarian can focus only on objects that lie at distances between 6.0 m and 0.37 m.
How many dark fringes will be produced on either side of the central maximum if light ( ?= 668 nm) is incident on a single slit that is 4.17 x 10-6 m wide?
What is the acceleration of the electron and the electromagnetic power radiated by the electron?
A laser can be used to suspend beads in the earth's gravitational field. A bead with mass 5 * 10^-6 g and density of .400 g/cm^3 is to be suspended
A circular diffraction pattern is formed on a faraway screen.
If the hemisphere describes a boundary between two interfaces having indices of refraction n (outside the hemisphere) and m (inside the hemisphere)
Light with a wavelength of 486 nm in air is passed through glass with an index of refraction of 1.54. (a) What is the wavelength of the light in the glass?
A eyeglass lens has strength of +5.50 diopters. What is the focal length of the lens?
A microscope has an objective with f = 1 cm, an ocular with f = 2.5 cm, and a distance s = 10 cm between them. Taking the best viewing distance as 25 cm