Many carb up before running as its important to have sugars fuel you for a day of perspiring and harsh exercise. Without eating you would run out of energy much quicker and be unable to preform with the same amount of energy you would have with fuel.
Answer:
Well, the three types of comes is Blue, green, and red if that helps :l
A concentrated acid is an acid which is in either pure form or has a high concentration. Laboratory type sulfuric acid (about 98% by weight) is a concentrated (and strong) acid.
A dilute acid is that in which the concentration of the water mixed in the acid is higher than the concentration of the acid itself. For instance, 5% sulfuric acid is a dilute acid.
A dilute acid, unlike a concentrated acid, will ionize to a greater degree in their solution (higher percent dissociation with decreasing concentration). However, if an aqueous acid mixture (such as sulfuric acid, mentioned above) is added to water, the resultant pH from adding a dilute one would be higher (lower acidity) than for a concentrated one.
This problem has three questions I believe:
>
How hard does the floor push on the crate?
<span>We have to find the net
vertical (normal) Fn force which results from Fp and Fg.
We know that the normal component of Fg is just Fg, which is equal to as 1110N.
From the geometry, the normal component of Fp can be calculated:
Fpn = Fp * cos(θp)
= 1016.31 N * cos(53)
= 611.63 N
The total normal force Fn then is:
Fn = Fg + Fpn
= 1110 + 611.63
=
1721.63 N</span>
> Find the friction
force on the crate
<span>We
have to look for the net horizontal force Fh which results from Fp and Fg.
Since Fg is a normal force entirely, so we can say that the
horizontal component is zero:
Fh = Fph + Fgh
= (Fp * sin(θp)) + 0
= 1016.31 N * sin(53)
=
811.66 N</span>
> What is the minimum
coefficient of static friction needed to prevent the crate from slipping on the
floor?
We just need to compute the
ratio Fh to Fn to get the minimum μs.
μs = Fh / Fn
= 811.66 N / 1721.63 N
<span>=
0.47</span>
Answer: because you touch things with your finger and not with your neck and you finger has to be more sensitive to feel the thing you are touching.
Explanation: