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In a period of 9.00 s, 9.40x1023 nitrogen molecules strike a section of a wall with an area of 2.00 cm2. If the molecules move with a speed of 414.0 m/s and strike the wall head on in elastic collisions, what is the pressure exerted on the wall? (The mass of one N2 molecule is 4.68 x10-26 kg.)
A heater coil connected to a 240 Vrms ac line has a resistance of 34 Ohms. find min values of the instantaneous power
In an interstellar gas cloud at 48.2 K, the pressure is 1.16 x 10-8 Pa. what is their mean free path
Find the speed of a satellite in a circular orbit around the earth with a radius 4.01 times the mean radius of the earth; RE 6.37E+3km; ME 5.98E+24kg
A column of soldiers, marching at 141 paces per minute, keep in step with the beat of a drummer at the head of the column, What is the approximate length of the column
Sam, who's mass is 79 kg, takes off across level snow in his jet powered skis. The skis have a thrust of 204 N and a coefficient of kinetic friction on snow of 0.1. Unfortunatately the skis run out of fuel after only 13 s.
A firefighter standing on a ladder 4.20 meters in the air is using a water hose to put out a fire. How much work is done per minute in lifting the water from the ground
Determine the equation for velocity of the particle as a function of time. Create a graph of velocity vs. time for the particle, for the time interval 0
An "energy bar" contains 21g of carbohydrates. If the energy bar was his only fuel, how far could a 68 kg person walk at 5km/hr? Express your answer using two significant figures.
A 7.00g coin is placed 17.0cm from the center of a turntable. What is the maximum angular velocity with which the turntable can spin without the coin sliding
Assuming the sun to be a blackbody with a surface temperature of 6000K, Determine the loss in solar mass per day due to this radiation
A spring loaded ballistic pendulum gun requires an increasing force to load, Calculate the work required to load the gun
W hat is balls initial speed
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