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marusya05 [52]
2 years ago
5

What is the unit of pressureis it P=F/A?

Physics
2 answers:
Margaret [11]2 years ago
4 0

Answer:

Units of pressure include: <u>Pa, bar, at, atm, torr, lbf/in^2</u>

<u></u>

Explanation:

P = F/A is a formula for pressure not a unit.

Pa = Pascal

Bar = Bar

at = Technical Atmosphere

Torr = Torr

lbf/in^2 = pounds per square inch

Fudgin [204]2 years ago
3 0
The SI unit for pressure is the pascal (Pa), equal to one newton per square metre (N/m2, or kg·m−1·s−2). This name for the unit was added in 1971; before that, pressure in SI was expressed simply in newtons per square metre.
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Answer: d)

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If both beams have the same power, this means Energy/time so the number of photons per second must be different. As consequence a) is wrong as  b) since it is not posible since UV photon  have more energy that IR photons. c) It is no necessary know the frequency since the wavelength is related in the form:

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d) Certainly will be more more IR photons than UV photons to get the same beam power.

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saveliy_v [14]
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