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A 0.26 kg rock is thrownvertically upward from the top of a cliff that is 33 m high. Whenit hits the ground at the base of the cliff the rock has a speed of32 m/s.
(a) Assuming thatair resistance can be ignored, find the initial speed of the rock.
(b) Find the greatest height of the rock as measured from the baseof the cliff.
A ball is thrown straight upward (along the y-axis) with an initial velocity of 9m/s from the top of a building located 20 m above ground. Find the maximum height of the ball
An accelerator produces a beam of protons with a circular cross section that is 2.0 mm in diameter and has a current of1.1 mA. What is the number density of the protons in the beam
An object that is 35 cm in front of a convex mirror has an image located 20 cm behind the mirror. How far behind the mirror is the image located
A car battery stores about 3.00 MJ of energy. If all this energy were used to generate a uniform electric field of 27.0 kV/m, what volume would it occupy.
A roller coaster at an amusement park has a dip that bottoms out in a vertical circle of radius r. how fast is the roller coaster traveling at the bottom of the dip
A magnetic field has a magnitude of 0.0018 T, and an electric field has a magnitude of 3.4 × 103 N/C. Both fields point in the same direction. find the magnitude of the net force that acts on the charge
Electrons are injected into a chamber with a B field of 10T at a velocity of 10^7 m/s, the electrons will go into cyclotron orbit. What is the direction of the orbit
The second-order fringe of 660 nm light is observed at an angle of 21° when the light falls on two narrow slits that are 3.68 μm apart. at what angle would we expect it to be observed
Two charged spheres are 8.45cm apart. They are moved, and the force on each of them is found to have been tripled. How far apart are they now.
Consider a bright star in our night sky. Assume its distance from Earth is 45.9 light-years (ly) and its power output is 4.00 multiply.gif 1028 W, Find the power of the starlight the Earth intercepts
A fireman tosses his 0.85-kg hat onto a peg, where it oscillates as a physical pendulum, find the moment of inertia of the hat about the pivot point
A motorist drives north for 35 minutes at 85 km/h and then stops for 15.0 minutes. He then continues north, traveling an additional 130 km in 2 h.
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