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A liquid of density 1258 kg/m3 flows with speed 1 m/s into a pipe of diameter 0.26 m. The diameter of the pipe decreases to 0.05 m at its exit end. The exit end of the pipe is 5.48 m lower than the entrance of the pipe, and the pressure at the exit of the pipe is 1 atm.
Applying Bernoulli’s principle, what is the pressure P1 at the entrance end of the pipe?
Calculate the direction of the average force on the ball during the contact . The magnitude of the average force is 4700N
The lander is 8.2 meters above the surface and has the downward speed of 0.89 m/s while the engine is cut off. What is the speed of the lander just before it touches the surface.
q1. a wheel is spinning clockwise at a 12.0 revolutions per second at t 0. because of friction in the bearings
questiona status newtons first law of motion. b a 2-kg object is affecting horizontally with a speed of 4 ms. how much
Two equally charged, 1.00 g spheres are placed with 2.00 cm between their centers. find the magnitude of the charge on each sphere
A positively charged oil drop of mass is injected into a region of uniform electric field between two oppositely charged, horizontally oriented plates spaced 16 cm apart. what is the magnitude of the charge on the drop
A copper bar 2.5 m long has a circular cross section of radius 2 cm. One end is kept at 80 oC and the other end is kept at 0 oC. what is the thermal current in the copper bar
You push on the chair with a force of = 35.0 directed at an angle of 43.0 below the horizontal and the chair slides along the floor.Using Newton's laws, compute the magnitude of the normal force that the floor exerts on the chair.
A particular Ferris wheel has a radius of 24 meters, and it makes one complete revolution around its axle (at location A) in 20 seconds. In all of the following questions, consider location A (at the center of the axle) as the location around whic..
A window air conditioner unit absorbs 9.85 104 J of heat per minute from the room being cooled and in the same time period deposits 1.47 105 J of heat into the outside air. What is the energy efficiency rating of the unit
A heat engine using a diatomic ideal gas goes through the following closed cycle: Isothermal compression until the volume is halved. What is the thermal efficiency of this heat engine
If the measured parallax shift of star A was 0.1 arcsecs and the parallax shift of star B was 0.05 arcsecs, What is the distance of the farthest star in light-years
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