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The average velocity of water at 20°C in a tube of radius 0.°m is 0.2 m s.
(a) is the flow laminar or turbulent?
(b) what is the flow rate?
A monoenergetic beam of electrons is incident on a single slit of width 0.95 nm. A diffraction pattern is formed on a screen 24 cm from the slit. what is the energy of the incident electrons
A passenger plane lands on the runway at 300kmhrô???1. In a glass of water in the cabin, calculate the deceleration of the plane
what is the equation for gravitational potential energy?what is the equation for kinetic energy?define conservation of
A gasoline engine absorbs 4190 J of heat and performs 3170 J of mechanical work for each turn of the engine shaft
On a workday an average decibel level of the busy street is 89 dB, with 100 cars passing a given point every minute. If the number of cars is reduced to 30 every minute on a weekend, what is the decibel level of street.
A balloon is filled with helium at a pressure of 2.3×105 Pa. The balloon is at a temperature of 14ºC and has a radius of 0.27 m. How many helium atoms are contained in the balloon
The bones a a saber-toothed tiger are found to have an activity per gram of carbon that is 14.5 % of what would be found in a similar live animal. How old are these bones
A large oak tree produces 2.2 metric tons of wood over a 50 year growth lifespan. find the tree's efficiency for converting solar energy to wood heating value
A certain laboratory experiment requires an aluminum wire of length of 25.0 m and a resistance of 3.10 ohms at 20.0 degree Celsius
Blood from an animal is placed in a bottle 1.79 m above a 3.20 cm long needle of inside diameter 0.360 mm, What is the viscosity of this blood
How long must a 0.60-mm-diameter aluminumwire be to have a 0.50 A current when connected to the terminals ofa 1.5 V flashlight battery
Two resistors, 66.0 ? and 68.0 ?, are connected in parallel. The current through the second resistor is 3.80 A. Determine the current in the first resistor
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