Answer:
The nucleus has an overall positive charge as it contains the protons. Every atom has no overall charge (neutral). This is because they contain equal numbers of positive protons and negative electrons. These opposite charges cancel each other out making the atom neutral.
Answer:
40sec
Explanation:
Data
Work = 440 J
Power= 11watt
time = ?
Power = work done/time
===> time = work done/power
= 440/11
= 40sec
Answer:
b) 1.67×10^7 m/s
Explanation:
The solution is attached in the attachment section
That would be a frequency of 1.2666... beats per second. This can be phrased as your heart beats at 1.27 Hz.
We know that:
d=vt
d=32mph*5h
d=160mi
