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2 years ago

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The rate of change of atmospheric pressure P with respect to altitude h is proportional to P, provided that the temperature is c

onstant. At 15 degrees Celsius the pressure is 101.3 kPa at sea level and 87.14 kPa at h = 1000m. What is the pressure at an altitude of 3000 m?

1 answer:

puteri [66]2 years ago

6 0

Answer:

64.59kpa

Explanation:

See attachment

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Explanation:

Given that,

Initial speed of the electron, $u=4\times 10^5\ m/s$

Distance, s = 5 cm = 0.05 cm

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(a) Let v is the electron's velocity when it emerges from this region. It can be calculated as :

$v^2=u^2+2as$

$v^2=(4\times 10^5)^2+2\times 6\times 10^{12}\times 0.05$

v = 871779.788 m/s

or

$v=8.71\times 10^5\ m/s$

(b) Let t is the time for which the electron take to cross the region. It can be calculated as:

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$t=7.85\times 10^{-8}\ s$

Hence, this is the required solution.

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A skydiver finds that she speeds up when she holds her arms close to her body. What does this do?

ArbitrLikvidat [17]

D. Reduces the force of air resistance

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A mouse runs along a baseboard in your house. The mouse's position as a function of time is given by x(t)=pt2+qt, with p = 0.36

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Answer:

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v_avg = [(0.36(4.0)² − 1.20(4.0)) − (0.36(1.0)² − 1.20(1.0))] / 3.0

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2 years ago

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Answer:

The most correct option is;

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Where:

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v = 140 m/s

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t = 14.3 sec

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