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At a certain point in a horizontal pipeline, the water's speed is 4.00{\rm m/s} and the gauge pressure is 2.20×104 {\rm Pa}. Find the gauge pressure at a second point in the line if the cross-sectional area at the second point is twice that at the first.
A firefighter with a weight of 702 N slides down a vertical pole with an acceleration of 2.90 m/s2, directed downward. What are the magnitudes and directions (choose the positive direction up) of the vertical forces
A meterstick (L = 1 m) has a mass of m = 0.133 kg. Initially it hangs from two short strings: one at the 25 cm mark and one at the 75 cm mark. What is the tension in the left string right after the right string is cut
An ideal gas is enclosed in a cylinder that has a moveable piston on top. The piston has a mass of 6200 g and an area of 5 cm2 and is free to slide up and down.
After completing the calculations below, sketch the pH curve for the titration of 25.0 mL of 0.200M solution of a weak acid, HA = (Ka = 6.0 x 10^-7), with 0.200M KOH. Indicate the pH at (a) the beginning of the titration
Suppose you were performing the same experiment on this crate but were doing it on the moon instead, where the acceleration due to gravity is 1.62 m/s squared. What magnitude push would cause it to move? What will be its acceleration if you maintaine..
A proton (with a rest mass m=1.67×10?27kg) has a total energy that is 4.00 times its rest energy. What is the magnitude of the momentum p of the proton
A girl of m1=60 kg springs from a trampoline with an initial upward velocity of Vi=8.0 m/s. what is the speed of the girl immediately before she grabs the box
Three thin uniformly charged shells A, B and C, with radii R, 2R , 3R respectively are placed one inside the other, What is the electric potential at radius 2R
After falling from rest from a height of 26 m, a 0.5 kg ball rebounds upward, reaching a height of 16 m. If the contact between ball and ground lasted 1.6 ms, Evaluate average force was exerted on the ball?
how long does it take for a person to radiate. Calculate the time of flight.
The objective focal length is 2.00 cm and they eye piece focal length is 4 cm. Calculate the location of the final image and determine lateral magnification
An aerosol can of whipped cream is pressurized at 440kPa when it's refrigerated at 3 C. The can warns against temperature in excess of 50 C. What is the safest pressure for the can .
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