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Luciana Flores
Physics
In tae-kwon-do, a hand is slammed down onto a target at a speed of 10.5 m/s and comes to a stop during the 2.13 ms collision. Assume that during the impact the hand is independent of the arm and has a mass of 0.400 kg. What is the magnitude of the impulse?
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Gabriella Perez
Physics
If you looked at the frequently spectrums of two friends saying the word dog, would they look the same or different
?
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Marilyn
Physics
Which of the following atoms has the smallest radius?
The Periodic Table
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Grant Blevins
Physics
When do centromeres split
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Jaelyn Brandt
Physics
Who passes on dyslexia the mother or the father
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Cristal Carrillo
Physics
In a research facility, a person lies on a horizontal platform which floats on a film of air. When the person's heart beats, it pushes a mass m of blood into the aorta with speed v, and the body and platform move in the opposite direction with speed V. Assume that the blood's speed is 56.5 cm/s. The mass of the person + platform is 54.0 kg. The platform moves 6.30 ✕ 10-5 m in 0.160 s after one heartbeat. Calculate the mass (in g) of blood that leaves the heart. Assume that the mass of blood is negligible compared with the total mass of the person, and the person + platform is initially at rest. (Also assume that the changes in velocity are instantaneous.)
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Guest
Physics
What are some ways the oceanic crust and the continental crust are alike?
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Branden Schneider
Physics
Why is gangue sometimes reprocessed.
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Kaleb
Physics
4.7 cm. The tube is sealed at one end and loaded with lead shot to give it a total mass of M = 130 g. The tube floats in water (of density 1 g/cm3) in vertical position, loaded end down. What is the depth of the bottom end of the tube? Answer in units of cm.
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Magdalena Kent
Physics
Why is it incorrect to say that vascular tissue, gametophytes, and fronds are all found mosses
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Zackery Rojas
Physics
Can the validity of a model be limited, or must it be universally valid? How does this compare to the required validity of a theory or a law?
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Roman Brooks
Physics
An engine with an electronic fuel injection system has high fuel pressure at idle. This could be caused by a:
A. low manifold vacuum
B. leaking fuel pump check valve
C. plugged fuel injection valve
D. high manifold vacuum
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Anna Sloan
Physics
What is the final velocity of the 12 kg rock?
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Autumn Mclean
Physics
What must the total force on an object be for it to travel with a constant velocity? A) 0 N B) 10 N C) 20 N D) 100 N
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Darrell Conrad
Physics
Why are chloroplast not needed in animal cells?
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