1st law of motion because if the truck stops unexpectedly, the dog will continue to stay in motion. 2nd law because the mass of the dog is less than the truck (which has a high acceleration).
Answer:
(a)
(b) v = 1064 m/s
Explanation:
(a) Frequency of electromagnetic wave,
Let is the wavelength of electromagnetic wave. It can be calculated as :
(b) Frequency of medium, f = 532 Hz
Wavelength,
Let v is the speed of sound wave in an unknown fluid. Using the relation as :
v = 1064 m/s
Hence, this is the required solution.
Answer:
» An electron is lighter than a proton.
<u>explanation</u><u>:</u>
hence it's mass number is zero
hence it's mass number is 4
<u>Therefore</u><u>,</u><u> </u><u>proton</u><u> </u><u>is</u><u> </u><u>heavier</u><u> </u><u>than</u><u> </u><u>electron</u>
» An electron has a small charge magnitude than a proton.
<u>Explanation</u><u>:</u>
An electron has charge of -1 while proton has charge of +2, therefore electron is less deflected by any energetic fields than a proton