![gthif13211](/avatars/39457.jpg)
gthif13211
18.07.2020 •
Physics
Question 2 (Multiple Choice Worth 2 points)
(03.06 LC)
Which of the following is a common groundwater contaminant?
O Ozone
O Nuclear waste
O Carbon monoxide
O Fertilizers
Question 3(Multiple Choice Worth 2 points)
10 M
Solved
Show answers
More tips
- H Health and Medicine 10 Ways to Cleanse Your Colon and Improve Your Health...
- W Work and Career How to Write a Resume That Catches the Employer s Attention?...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
- H Health and Medicine Kinesiology: What is it and How Does it Work?...
- O Other How to Choose the Best Answer to Your Question on The Grand Question ?...
Answers on questions: Physics
- P Physics WILL MARK BRAINLIEST!...
- S Spanish Read the instructions to make a cup of tea or té. Select the word that best completes the instruction....
- B Business Please help Match the symptoms of older engines with the extra benefit of high-mileage oils: More rapid rate of engine wear.A) Contain special seal conditioners to help leaksB) Extra...
- M Mathematics The first five terms of an arithmetic sequence are 4, 10, 16, 22, and 28. Which function f(x) could be used to describe the xth term of the sequence?(1 point) f(x)=−6x−2 f(x)=6x+4...
- E English Your family pet starts speaking to you. What does he or she think is going on here?...
- L Law Someone should ttm lol im bored...
- E English What that app yall talk about?...
- M Mathematics -0.59x+0.39x=5.8 I need help...
- M Mathematics Meme now pls free points...
- C Computers and Technology Whos really watching this guys bruh...
Ответ:
The common groundwater contaminant are fertilizers.
Explanation:
Ответ:
The answer would be D( Fertilizers)
Explanation:
A fertilizers or fertilizer is any material of natural or synthetic origin that is applied to soil or to plant tissues to supply one or more plant nutrients essential to the growth of plants. Many sources of fertilizer exist, both natural and industrially produced.
Ответ:
This question is incomplete, the complete question is;
A ladder 25 feet long is leaning against the wall of a house. The base of the ladder is pulled away from the wall at a rate of 2 feet per second. (a) What is the velocity of the top of the ladder when the base is given below
7 feet away from the wall
15 feet away from the wall
20 feet away from the wall
- When x is 7 feet away from the wall,
= -7/12 ft/s
- When x is 15 feet away from the wall,
= -3/2 ft/s
- When x is 20 feet away from the wall,
= -8/3 ft/s
Explanation:
Given the data in the question;
Let
ft and
ft represent the distance of the top of ladder from the ground and the distance of the bottom of ladder from the wall respectively.
Now using the Pythagoras Theorem ( right angled triangle ).
(hypotenuse)² = ( adjacent )² + ( opposite )²
so
r² = ( 25 )² - x²
r² = 625 - x² ------- let this be equation 1
now, we differentiate with respect to t
2r
= 0 - 2x ![\frac{dx}{dt}](/tpl/images/1316/7150/87aa9.png)
r
= -x ![\frac{dx}{dt}](/tpl/images/1316/7150/87aa9.png)
Now, from equation, r² = 625 - x²
r = √( 625 - x² )
Then
given that, The base of the ladder is pulled away from the wall at a rate of 2 feet per second i.e
= 2 ft/s
so;
∴
When x is 7 feet away from the wall;
we simplify
Therefore, When x is 7 feet away from the wall,
= -7/12 ft/s
When x is 15 feet away from the wall
we simplify
Therefore, When x is 15 feet away from the wall,
= -3/2 ft/s
When x is 20 feet away from the wall
we simplify
Therefore, When x is 20 feet away from the wall,
= -8/3 ft/s