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A shell is fired from the ground with an initial speed of 1.56 multiplied by 103 m/s at an initial angle of 40° to the horizontal.
(a) Neglecting air resistance, find the shell's horizontal range.
(b) Find the amount of time the shell is in motion.
Find the change in momentum of a 1140kg car that increases its speed from 4.5 m/s to 18.0 m/s in a time of 19s while travelin in the same direction
In the Bohr model of the hydrogen atom, what is the de Broglie wavelength for the electron when it is in the n = 2 level
You are the science officer on a visit to a distant solar system. Prior to landing on a planet you measure its diameter to be 1.8 x 10^(7) m and its rotation period to be 22.3hours. What is the mass of the planet and star
The orbital angular momentum of an electron has a magnitude of 4.716*10^-34 kg*m^2/s. What is the angular-momentum quantum number l for this electron
Suppose now that the apparatus is sealed, and the temperature rises to 40.0o C. Find the pressure inside the apparatus now
A vertical straight wire carrying an upward 26 A current exerts an attractive force per unit length of 9.0*10^-4 N/m on a second parallel wire 9.0 cm away
Consider 3 Resistors: 10 k?, 20 k?, and 30 k?. Calculate the total resistance if the resistors are connected in series with each other
A biology student uses a simple magnifier to examine the structural features of an insect's wing. The wing is held 3.60 cm in front of the lens, What angular magnification is achieved
You can think of the work?kinetic energy theorem as a second theory of motion, parallel to Newton's laws in describing how outside influences affect the motion of an object. Use the work-kinetic energy theorem to find the net work that is done on t..
On the planet Zardem, the standard unit of time is the Zarsec, or Zs, where 1 Zs = 2.2s. how fast is the runner traveling
A duck is floating on a lake with 21% of its volume beneath the water. What is the average density of the duck
A ball is thrown straight upwith an initial velocity v0=4.9 m/s. Assume that the acceleration due to gravity is g=9.8 m/s^2 downward. How long does it take to come back to its inital position
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