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Arte-miy333 [17]
3 years ago
11

What level of nitrates is considered clean water?

Physics
1 answer:
lana66690 [7]3 years ago
6 0
The U.S. Environmental Protection Agency (EPA) standard for nitrate in drinking water is 10 milligrams of nitrate (measured as nitrogen) per liter of drinking water (mg/L). * Drinking water with levels of nitrate at or below 10 mg/L is considered safe for everyone.
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10. A force F S 1 of magnitude 6.00 units acts on an object at the ori- gin in a direction u 5 30.0° above the positive x axis (
MArishka [77]

Answer:

The x component of the x axis is:   F_x = F_1\cos(30)=5\cos(30)= 4.33 u

The y component of the y axis is:  F_y =F_2+ F_1\sin(30)=6.00+5\sin(30)= 8.50 u

The magnitude is given by:  F = \sqrt{F_x+F_y}= 9.54 u

The direction is given by:  \theta = \tan^{-1}\frac{F_y}{F_x}= 63.0 ^\circ

See the graphical magnitude and direction below.

Explanation:

The x component of the x axis is:   F_x = F_1\cos(30)=5\cos(30)= 4.33 u

The y component of the y axis is:  F_y =F_2+ F_1\sin(30)=6.00+5\sin(30)= 8.50 u

The magnitude is given by:  F = \sqrt{F_x+F_y}= 9.54 u

The direction is given by:  \theta = \tan^{-1}\frac{F_y}{F_x}= 63.0 ^\circ

8 0
2 years ago
Which statements describe the image produced by a concave lens?check all that apply.
kotegsom [21]

<em>Answer:</em>

<em>The answers are: </em>

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7 0
3 years ago
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Drupady [299]

Answer:

Explanation:

If an object is moving, it is said to have kinetic energy (KE). Potential energy (PE) is energy that is "stored" because of the position and/or arrangement of the object. The classic example of potential energy is to pick up a brick. When it's on the ground, the brick had a certain amount of energy.

3 0
3 years ago
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Cubes are three-dimensional square shapes that have equal sides. What is the density of a cube that has a mass of 12.6 g and a m
sweet-ann [11.9K]
 I got 3.07cm³. Its just 12.6 divided by 4.1
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3 years ago
When the Moon orbits Earth, what is the centripetal force?
Troyanec [42]

Answer:

D

Explanation:

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