First slide

Physical quantities and units

Question

Torr is the unit of physical quantity

Moderate

A

density
B

pressure
C

torque
D

None

Solution

$(1) d e n s i t y = \frac{m}{v} = k g m^{- 3}$
$(2) P r e s s u r e = P = \frac{F}{A} = N m^{- 2} = t o r r$
$(3) T o r q u e = \vec{T} = r \times F = N m$

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