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Q1. A cannon tilted upward at theta = 35{rm ^ {circ}} fires the cannonball with a speed of 99 {rm m/s}.
At that instant, what is the component of the cannonball's velocity parallel to the ground?
Express the answer using two significant figures.
Q2. How would you describe why we have different atmospheric pressure on different level (height) of earth's atmosphere in molecular level (molecular behaviour and what causes such behaviour)?
Assume unpolarized light of intensity 197 W/m2 falls on the polarizer in the figure, and the angle in the drawing is 37.0°. What is the light intensity reaching the photocell?
A car travelling at 23 m/s runs out of gas while travelling up a 20 degree slope. How far up the hill will it coast before starting to roll back down.
What is the greatest amount through which the wavelength of an incident photon could change when it undergoes Compton scattering from an atom or molecule with a 19 u mass.
Compute the index of refraction of the gas
What is x and y coordinates of the shell
A discussion of why the ideal gas law is expected to fail at low temperatures and how its failure may affect your estimation of absolute zero.
A highway curve with a radius of 555 m is banked properly for the car travelling 150 km/h. If a 1650 kg Porshe 928 S rounds the curve at 220 km/h, how much sideways force must the tires exert against the road if the car does not skid.
An object with a net charge of 44 µC is placed in a uniform electric ?eld of 554 N/C, directed vertically. The acceleration of gravity is 9.81 m/s^2. What is the mass of this object if it ?oats in this electric ?eld?
What happens to support force on the workmens feet
Runner A is initially 6.80 km west of a flagpole and is running with a constant velocity of 2.6 km/h due east. Runner B is at first 3.80 km east of the flagpole and is running with a constant velocity of 8.20 km/h due west. What will be the distan..
Find the work function of the emitting surface and the wavelength of the second source. Determine the net work done on the piano.
Objects with masses of 145kg and a 445kg are separated by 0.330m. At what position (other than infinitely remote ones) can the 32kg object be placed so as to experience the net force of zero.
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