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A football player carrying the ball runs straight ahead at the line of scrimmage and directly into a wall of defensive linemen. The ball carrier has an initial speed of 7.68m/s and is stopped in a time interval of 0.198 s. Find the magnitude and direction of his average acceleration.
magnitude
A patient recovering from surgery is being given fluid intravenously. The fluid has a density of 1040 kg/m3, and 9.54 10-4 m3 of it flows into the patient every five hours. Find the mass flow rate in kg/s
What is the phase dierence between wavefronts originating from the two slits, at a point on the screen located +Π/10m from the zero'th order?
Without taking the existence of the nebula into consideration, based on its apparent magnitude, how far away does the star in part (b) appear to be? What would the propotion error be in determining the distance if interstellar extinction were negl..
A pipe comes diagonally down the south wall of a building, making an angle of 45? with the horizontal. Coming into a corner, the pipe turns and continues diagonally down a west-facing wall, still making an angle of 45? with the horizontal. What..
A curve with a 140 radius on a level road is banked at the correct angle for a speed of 20 . If an automobile rounds this curve at 30 , what is the minimum coefficient of static friction between tires and road needed to prevent skidding.
A car traveling at 21 {rm m/s} runs out of gas while traveling up a 25^circ slope. How far up the hill would it coast before starting to roll back down.
A 5.56 10-5 H solenoid is constructed by wrapping 62 turns of wire around a cylinder with a cross-sectional area of 8.30 10-4 m2 , Determine the change in the length of the solenoid.
A beam of ultraviolet radiation, with frequency of 2.56×1015 Hz is directed at a clean metal surface. Calculate the maximum kinetic energy for an electron dislodged from the surface by the radiation
The bunchberry flower has the fastest moving parts ever seenin a plant. Initially the stamens are held by the petals in abent position storing elastic energy liked a coiled spring. find the speed of the anther sac as it relases itspollen
Certain rifles can fire a bullet with a speed of 950 m/s just as it leaves the muzzle (this speed is called the muzzle velocity). What is the acceleration of the bullet within the rifle
A train is travelling up a 3.2 degree incline at a speed of 3.25 m/s when the last car breaks free and begins to coast. How long does it take for the last car to come to rest.
A parallel-plate capacitor is constructed with circular plates of radius 6.5×10?2 m . The plates are separated by 0.21 mm, find the value of the dielectric constant
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