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Light of wavelength 345 nm shines on a piece of calcium metal. What is the speed of the ejected electron? (Light energy greater than that of the work function of calcium ends up as kinetic energy of the ejected electron.) Work function for calcium= 4.34 x 10^-19 J.
A fire hose discharges water at a rate of 20.5 kg/s with a speed of 29.9 m/s. Find what magnitude of force is needed to keep the hose stationary
at a distance of 5 cm the microwave radiation from a cellphone has an intensity of 51 wm2. the maximum permissible
A uniform plate of height 1.020 m is cut in the form of a parabolic section. Find the distance from the rounded tip of the plate to the center of mass
a spaceshipmo 10000 kg amp lo 42m is observed to be 42.2m long while traveling towards earth. determine the speed of
Suppose a rocket ship in deep space moves with constant acceleration equal to 9.80 m/s2, which gives the illusion of normal gravity during the flight. How far will it travel in so doing
What is the highest compression of the spring for a perfectly inelastic impact.
Calculate the magnitude of the gravitational force exerted on a 462-kg satellite that is a distance of 2.08 earth radii from the center of the earth. What is the magnitude of the earth's acceleration
A 18V battery is hookedup to a circuit series. It's current current goes through the circuit as followed: A 3Ω resistor is connected inparallel to a 6Ω resistor. These are joined in series to a4Ω.
a force of 25 N at an angle of 37 degrees with thehorizontal pulls a 10 kg crate along a horizontal surfce ofdistance of 15m. How much work is done by this force
The ball leaves the bat 2.0 ms later with a vertical velocity of magnitude 10 m/s. Illustrate what is the magnitude of the average force of the bat on the ball during the ball-bat contact?
If the tank was full before the accident, what was the total outward force the molasses exerted on its sides? (Hint: Consider the outward force on a circular ring of the tank wall of width Dy and at a depth y below the surface. Integrate to find t..
Flash drives these days seem very small to those of us who were around at the beginning of the personal computer revolution. The hand shown in the picture at the right is holding a drive that can store 32 GigaBytes (32 x 109 Bytes). Estimate how big ..
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