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3 years ago

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1) Sketch (or scan or photocopy if you prefer) the plot below twice on your homework sheet. a) On one plot, draw the sum of the

two vectors, A+B, and on the second, draw the difference, A-B. b) Calculate the magnitudes of both, in units of the grid spacing.

1 answer:

miskamm [114]3 years ago

5 0

Answer:

yes

Explanation:

yes

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Fc=mv^2/r so we get

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A mass of gas has a volume of 4m3, a temperature of 290k, and an absolute pressure of 475 kpa. When the gas is allowed to expand

motikmotik

Given:

V1 = 4m3

T1 = 290k

P1 = 475 kpa = 475000 Pa

V2 = 6.5m3

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Required:

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3 years ago

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Air Pressure ______ With Elevation. (A) Increases (B) Decreases (C) Does Not Change

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Air pressure ''Decreases'' with Elevation. So B) would be your answer.

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3 years ago

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A 4.5 g coin sliding to the right at 23.8 cm/s makes an elastic head-on collision with a 13.5 g coin that is initially at rest.

Airida [17]

Answer:

a) $v = 11.9\times 10^{-2}\,\frac{m}{s} \,(11.9\,\frac{cm}{s} )$ , b) $\Delta K = 9.559\times 10^{-5}\,J$

Explanation:

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$v = 11.9\times 10^{-2}\,\frac{m}{s} \,(11.9\,\frac{cm}{s} )$

b) The change in the kinetic energy of the 13.5 g coin is:

$\Delta K = \frac{1}{2}\cdot (13.5\times 10^{-3}\,kg)\cdot \left[(11.9\times 10^{-2}\,\frac{m}{s} )^{2}-(0\,\frac{m}{s} )^{2}\right]$

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