The trough. The crest is compressed.
Answer:
The time constant τ = L/R represent the time requiered for the curent to get value of 63 % of its maximun value
Explanation:
In a circuit RL ( serie circuit with a resistor R and the inductor L ) when a voltage is applied the inductor will have a reaction, such reaction consist in the creation of an electromotive force which will prevent the current to get its maximun value. The time constant which in the case of an inductor is
τ = L/R , represent the time requiered for the crrent to be 63 % of its final value
Answer:
sin 30° = 
Multiply each side by 25 to cancel the 25 under 
(25)· sin 30° =
Multiply everything on the left side.
12.5 
= vertical velocity component.
I attached a picture, I hope it helps.
If you look at the chart you see that there are 6 kids that spend 4-5 hours on the internet out of a total of 15 so it can be put into a fraction like this: 6/15 if you divide this fraction you will get the decimal form: 0.4 multiply this number by 100 and you get the percent: 40%
