A hairdryer draws a current of 3.0 A. How many electrons pass through the filament of the hair dryer in a time of thirty seconds?
(1 Point)
90
2.4 x 10^19
5.6 x 10^20
9.9 x 10^18

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer

A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?