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Water flows through a horizontal pipe of cross-sectional area 10.0 cm2 at a pressure of 0.250 atm. The flow rate is 1.00 x 10-3 m3/s. At a valve, the effective cross-sectional area of the pipe is reduced to 5.00 cm2. What is the pressure at the valve?
The nucleus of a hydrogen atom is a single proton, which has a radius of about 1.2 × 10-15 m. What is the ratio of the density of the hydrogen nucleus to the density of the complete hydrogen atom
Find out the potential difference between r2 and r1
A 130kg astronaut (including space suit) acquires a speed of 2.55m/s by pushing off with his legs from a 2000kg space capsule. What is the change in speed of the space capsule
Suppose that you hear a clap of thunder 18.4 s after seeing the associated lightning stroke. The speed of sound waves in air is 343 m/s and the speed of light in air is 3.00 x10^8 m/s. How long are you from the lightning stroke.
Water flows through a horizontal tube of diameter 2.9cm that is joined to a second horizontal tube of diameter 2.0cm . The pressure difference between the tubes is 7.6kPa
In diving to a depth of 527 m, an elephant seal also moves 937 m due east of his starting point. What is the magnitude of the seal's displacement?
If the charge of the point charge in the figure were -2Q (instead of +Q), by what factor would the magnitude of the force on the point charge due to the dipole change.
W hat is balls initial speed
A loudspeaker on a tall pole broadcasts sound waves equally in all directions. If the sound output is 7.0 W, at what distance from loudspeaker is the sound intensity level 85.7 dB.
Determine the magnitude of the total initial momentum of the two-block system. Find , the magnitude of the final velocity of the two-block system. What is the change in the system's kinetic energy due to the collision?.
0.023mol of a diatomic gas, with initial temperature 25?C, How much heat is added during this process
You run a microwave for 6 minutes together with a 1500 W boom-box and a 2800 W space heater. What is the power of your microwave
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