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A shell is fired wit ha horizontal velocity in the poxitive x direction from the top of an 80m hight cliff. shell strikes the ground 1330m from the base of the cliff.
A) Determine the initial speed of the shell?
B) determine how long it takes for the shell to hit the ground?
C) what is the speed of the shell as it hits the ground?
Consider an infant who weighs 100 newtons. During each year she grows so that each dimension of her body increases by 5%. How much would she weigh then.
a falling rubber ball bounces off the floor. the velocity just before it hits the floor is Vi= (2.7m/2) x + (5.2m/s)y. what is the change in momentum of the ball from just before to just after it is in contact with the floor
White light illuminates an oil film on water. Viewing it directly from above, What is the refractive index of the oil
A falling skydiver has a mass of 109 kg. What is the magnitude of the skydiver's acceleration
A near-sighted person's eyeglasses has a focal length of ? 22.0 cm, and the lens is 1.8 cm from the eye. If the person switches to contact lenses that are placed directly on the eye, what should be the focal length of the corresponding contact len..
An electron in a 1-D box of length 0.100 nm, Find the energies of the four lowest states that have energies above the ground states
A hunter on a frozen, essentially frictionless pond uses a rifle that shoots 4.20g bullets at 975m/s. Find the recoil speed of the hunter if he fires the rifle horizontally
Four identical point charges (+3.17nC) are placed at the corners of a rectangle, what is the potential at the geometric center of this rectangle
A thin film of MgF2 (n=1.38) coats a piece of glass. Constructive interference is observed for the reflection of light with wavelengths of 500nm and 625nm.
A railroad car with a mass of 11600 kg collides and couples with a second car of mass 18600 kg that is initially at rest. what is the final velocity of the two railroad cars after they couple
A 43 kg girl and an 8.4 kg sled are on the frictionless ice of a frozen lake, 17 m apart but connected by a rope of negligible mass. What is the acceleration of the girl
Two capacitors, C1 = 6.00 µF and C2 = 14.0 µF, are connected in parallel, and the resulting combination is connected to a 9.00-V battery. (a) Find the equivalent capacitance of the combination.
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