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A small stone is thrown vertically downward at an initial speed of 14 m/s from a height of 65 meter above the ground.
(a) Determine how far does the stone travel in 2.0 second?
(b) Determine its velocity just before it hits the ground?
a tank whose bottom is a mirror is filled with water to a depth of 19.6 cm. a small fish floats motionless 6.20 cm
An electron with kinestic energy 1.8 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 27.0 cm, Find the period of the motion
You are holding a conducting loop of copper and looking at its circle. Behind it is a long current-carrying wire carrying the current from left to right. what is the direction of current flow if any
A barge has vertical sides and a flat bottom of 320 ft^2 area. when partially filled, the barge is immersed in fresh water to a depth of 2 ft. upon removal of the load the barge rises 16.0 in.
solar cells are often coated with a transparent thin film of silicon monoxide sio n 1.45 to minimize re?ective losses
To focus a camera on objects at dissimilar distances, the converging lens is moved toward or away from the image sensor, so a sharp image always falls on the sensor. A camera with a telephoto lens (f= 200.0mm) is to be focused on an object located fi..
Calculate the number of coulombs of positive charge in 285 cm3 of (neutral) water. (Hint: A hydrogen atom contains one proton; an oxygen atom contains eight protons.)
The light ray makes an angle of α = 32.1° with the normal line at the boundary of linseed oil and water. find the angles θ1 and θ2. Note that n = 1.48 for linseed oil.
(a) Calculate the lowest energy of the electron in He+. Is it lower than that of H.(b) If this electron absorbs a photon and makes a transition to the 2p orbital, what is the frequency of the absorbed photon
Two 3.0 ?C charges lie on the x-axis, one at the origin and the other at 25 m. What is the potential at this third point relative to infinity
compute the energy level vales such that lasing population inversion occurs between n=2 and n=3 energy level of the lyman series.b) determine the absorption wavelength and the lasing wavelength
In a circus act, a 60 kg clown is shot from a cannon with an initial velocity of 14 m/s at some unknown angle above the horizontal. What is the kinetic energy of the clown as he lands in the net
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