Answer:
(a) 0.0113 ±0.0001 inches
(b) 5 decks
Explanation:
<u>Given information</u>
52 cards, thickness is 0.590 ±0.005 inches
Since this is thickness of all the cards, to get the thickness of a single card we divide the total thickness (plus uncertainty) by the number of cards hence
1 card=
±
= 0.0113461 ±0.000096 inches
Considering that thickness is given to 3 significant figures while uncertainty is to 1 significant figure, the final answer should also conform to these hence giving the first part of the answer to 3 significant figures while second part to 1 significant figure yields 0.0113 ±0.0001 inches
(b)
Considering that the cards have uncertainty of 0.0001 inches and the number of decks, n required to create uncertainty of 0.00002 inch is given by
We need 5 decks for the given uncertainty
Answer:
D) fused hands, no range of motion.
Explanation:
As we've seen in blind people, blindness is adapted to and other skills are highly developed to accommodate. B would be awkward, but not deadly. C would be fine mostly, since we are still able to see. However, D, with no range of motion, we would find it very difficult to defend ourselves and care for ourselves.
Answer:
t = 166 years
Explanation:
In order to calculate the amount of years that electrons take to cross the complete transmission line. You first calculate the drift speed of the electrons by using the following formula:
(1)
I: current on the wire = 1,010A
n: free charge density = 8.50*10^28 electrons/m^3
A: cross-sectional area of the transmission line = π*r^2
r: radius of the cross-sectional area = 2.00cm = 0.02m
You replace the values of the parameters in the equation (1):
Next, you use the following formula:
(2)
x: length of the line transmission = 310km = 310,000m
You replace the values of vd and x in the equation (2):
Finally, you convert the obtained t to seconds
The electrons take approximately 166 years to travel trough the complete transmission line
Answer:
"we both attract each other with the same force but we know that attraction between two bodies depends upon their mass, greater the mass of two bodies is the force of attraction between them"(got this off the internet).
