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A pipe carrying 20°C water has a diameter of 2.4 cm. Estimate the maximum flow speed if the flow must be streamline.
___________cm/s
A heat pipe is a device developed by NASA for efficiently transmitting thermal energy while in space. A heat pipe is to be constructed using a rigid pipe with a volume of 0.0002·m3, What is the specific and total internal energy of the water
In a photoelectric effect experiment, visible radiation of energy 2.68 eV is incident upon a metal of unknown work function. determine the work function of the metal
A 1663.22 lbs. go-cart and driver rounds a curve. If the centripetal force on the go-cart and driver is 1000 lbs. What is the radius of the curve
An L-R-C circuit has an inductance of 0.490H , a capacitance of 2.90×10?5F , and a resistance of R. What is the angular frequency of the circuit when R=0
A converging lens has a focal length of f = 26 cm. An object is placed 39 cm from the lens. Find out the size of an image in cm if the object has a height of 5 cm. express answer with one decimal place.
assume you would enter a vacuum chamber (on Earth), that is, a chamber with no air in it. Inside this chamber, if you dropped a hammer and a feather from the same height at the same time, both would hit the bottom at the same time.
You stand with your nose 5.0cm from the surface of a reflecting ball, and your nose's image appears three-quarters full size. What is the balls diameter?
Two people hear a tornado siren, What is the intensity level (in dB) at the farther listener relative to the other listener
a falling rubber ball bounces off the floor. the velocity just before it hits the floor is Vi= (2.7m/2) x + (5.2m/s)y. what is the change in momentum of the ball from just before to just after it is in contact with the floor
Spheres A and B are touched together and then separated. Sphere C is then touched to sphere A and separated from it. Lastly, sphere C is touched to sphere B and separated from it. Explain how much charge ends up on sphere C?
Electrons accelerated by a potential difference of 12.43 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the shortest possible wavelength
An antitank weapon fires a 3.00 kg rocket which acquires a speed of 50m/s after travelling 90cm down a launching tube. Assume the rocket was accelerated uniformly, what force acted on it.
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