Answer:
1. Current flows through the battery, aluminum foil, and paper clips, and into the wire coil, creating an electromagnet. One face of the coil becomes a north pole; the other a south pole. The permanent magnet attracts its opposite pole on the coil and repels its like pole, causing the coil to spin.
- Quoted from Google
2. Electrical engineers say that, in an electrical circuit, electricity flows one direction: out of the positive terminal of a battery and back into the negative terminal. Electronic technicians say that electricity flows the other direction: out of the negative terminal of a battery and back into the positive terminal.
- Quoted from Google
Search on google. It will have the right answer
It's simple. You just need to apply formular onto problem.
> How hard does the floor push on the crate?
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 1040N.
From the geometry, the normal component of Fp
can be calculated:
Fpn = Fp * cos(θp)
= 952.5 N * cos(53)
= 573.23 N
The total normal force Fn then is:
Fn = Fg + Fpn
= 1040 + 573.23
= 1613.2 N
> 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: </span>
Fh = Fph + Fgh
= (Fp * sin(θp)) + 0
= 952.5 * sin(53)
= 760.7 N
>
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
= 760.7
N / 1613.2 N
= 0.472
Answer:
Chemical reactions occur slower at lower temperatures and faster at higher temperatures. When you put a glow stick in cold water, the chemical reaction slows down but will last for a longer period of time. When you put a glow stick in hot water, the reaction speeds up but will be over quicker.
Explanation:
(self-explanatory)
I hope this helps, have a nice day.
