Question

name the fundamental units involved in the following derived units: a. Pascal b. newton c. watt d. joule e. volt f. ohm g. hertz​

Answer 1

a) A pascal is a pressure of one newton per square metre, or, in SI base units, one kilogram per metre per second squared. This unit is inconveniently small for many purposes, and the kilopascal (kPa) of 1,000 newtons per square metre is more commonly used.

b) The units for a newton are kilogram meter per second squared.

c) 1 joule per second

d) 1 Joule (J) is the MKS unit of energy, equal to the force of one Newton acting through one meter. 1 Watt is the power from a current of 1 Ampere flowing through 1 Volt. 1 kilowatt is a thousand Watts.

e) It can also be expressed as amperes times ohms, joules per coulomb (energy per unit charge), or watts per ampere (power per unit current). And finally, volt can be stated in SI base units as 1 V = 1 kg m2 s-3 A -1 (one-kilogram meter squared per second cubed per ampere).

f) kg⋅

${m}^{2}$

⋅

${s}^{ - 3}$

⋅

${a}^{ - 2}$

g) 1 hertz = 1 Hz. Hertz (Hz) is a derived unit of measure. Written with basic SI units Hz = 1/s or s-1. Frequency (Hertz) tells you how many times a event (cycle, rotation, etc.)