Answer:
<u>true</u>
Explanation:
they both have an electrical charge
protons have a positive charge while electrons have a negative charge but both still have an electrical charge
You have a distance and a time so you can work out the bikes speed which would be distance/time so 40mph.
Explanation:
Calcium carbonate is a molecule that contains one atom of calcium, one atom of carbon, and three atoms of oxygen.
Answer: 7.5 rev/s
Explanation:
We are given the angular velocity
a helicopter's main rotor blades:

However, we are asked to express this
in the International Systrm (SI) units. In this sense, the SI unit for time is second (
):


Answer: 1000 Hz · 0,5 m = 500 m/s
Explanation: speed = frequency · wavelength