Oquizy

Which is the correct scientific notation for 0.00045 m?

4.5 × 10⁴ m 4.5 × 10⁻³ m 4.5 × 10⁻⁴ m 45 × 10⁻⁵ m

Convert 5.0 × 10⁶ decagrams (dag) to micrograms (µg).

5 × 10¹² µg 5 × 10¹³ µg 5 × 10¹¹ µg 5 × 10¹⁰ µg

The ohm (Ω) is the SI unit of electrical resistance. It is defined as the potential difference of one volt per ampere of current. Which of the following expresses the ohm in base SI units?

kg·m²·s⁻²·A⁻¹ kg·m²·s⁻³·A⁻² kg·m²·s⁻³·A⁻¹ kg·m·s⁻²

1 megawatt is equal to:

10 000 W 100000 W 1000000 W 10000000 W

To determine the period of a simple pendulum accurately, a student should measure the time for

about 20 oscillations and divide the total time by 20. as many oscillations as possible in 5 seconds. one oscillation several times and find the average. one oscillation using a stopwatch.

Which of the following is a base SI quantity?

Energy Force Speed Temperature

Quiz: Physics - Physical Quantities, Units And Measurement