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Mercury flows through a horizontal pipe 1.40 cm in diameter and 0.6 m long. If the pressure drop from one end of the pipe to the other is 7.00*10^3 Pa, what is the rate of flow through the tube (liters per second = L/s)?
An archeologist on a dig finds a fragment of an ancient basket woven from grass. Later, What is the age of the basket
A ball is thrown at an angle of 30.9 degrees above the horizontal at a speed pf 8.77 m/s. What is the vertical component of the ball's velocity
When a 5.5 cm long pencil is arranged perpendicular to a convex mirror's optical axis at a distance of 29 cm from the mirror, its image is 2.8 cm tall. (a) What is the mirror's focal length (include sign if negative)? (b) How tall is the pencil's ..
A tank 2.30 meters in height is filled with water to a level of 2.10 meters. At the bottom of the tank a hose is attached. Find the velocity of the water coming out of the hose
An unstable elementary particle comes in two varieties, one with positive and one with negative electric charge, What is the difference (R+)-(R-) between the two rates, with its error
A physicist uses a cylindrical metal can 0.300m high and 0.070m in diameter to store liquid helium at 4.22 K; at that temperature the heat of vaporization of helium is 2.09×104J/kg. How much helium is lost per hour
A 55 year old woman who is complaining of intermittent flushing, itching and heartburn for several months. Mega dosing of that of the following vitamins may result in these symptoms.
A tennis player swings her 1000 g racket with a speed of 15.0m/s . She hits a 60 g tennis ball that was approaching her at a speed of 15.0m/s. compute the average force that the racket exerts on the ball
A 2.00×104kg railroad car is rolling at 1.00m/swhen a 5000kg load of gravel is suddenly dropped in.What is the car's speed just after the gravel is loaded
As measured in Earth's frame of reference, two planets are 485,000 km apart. How fast is the ship traveling
The school bus picks up Brian in front of his house and takes him on a straight-line 3.6 km bus ride to school in the positive direction. He walks home after school. If the front of Brian's house is the origin.
A particle moves with constant acceleration a . The expression vi+at represents the particle's velocity at what instant in time? Here are the choices.
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