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Lostsunrise [7]
3 years ago
7

Water that contains a larger than normal amount of __________ is still safe to drink.

Physics
2 answers:
ANTONII [103]3 years ago
6 0

Answer:magnesium

That's the answer

Lynna [10]3 years ago
4 0

Answer:

Water that contains a larger than normal amount of <em>magnesium</em> is still safe to drink.

Explanation:

Sulfur, lead and arsenic are harmful metals that are toxic to human health. Although magnesium present at high concentrations (above  approximately 250 mg/l each) can have a laxative effect. However, data suggest that  consumers adapt to these levels as exposures continue.

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A car starting from rest has a constant acceleration of 4 meters per second per second. How fast will it be going in 5 seconds?
irinina [24]

Answer:

18 m

Explanation:

Given : vo = 0 m/s ; t = 3 s; a = 4 m/s^2 ; d = ? m ; average velocity = ? m/s ; fonal velocity = ? m/s

solving for the final velocity, v

v = a * t

v = 4 m/s^2 * 3 s

v = 12 m / s

Solving for the average velocity. avg v

avg v = (vo + v) / 2

avg v = (0 m / s + 12 m/s) / 2

avg v = 6 m / s

Solving for the distance traveled after 3 s

d = avg v * t

d = 6 m / s * 3 s

d = 18 meters

In the first 3s the car travels 18 meters.

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3 years ago
A man travles at an average velocity of 12 m/s for 4 seconds. what is the total distance travled by the man?
gizmo_the_mogwai [7]
48 meters.
12 m/s and 4 seconds, so 4*12=48.
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If we increase the speed of rotation of wheel then the sound produced by cardboard touching the spokes of the wheel will become
Anarel [89]

it will become shrill

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Mason notices that his boat sinks lower into the water in a freshwater lake than in the ocean. What could explain this?
zloy xaker [14]

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A 0.80 kg basketball traveling upward at 5.0 m/s impacts an 8.0 10 kg tennis ball traveling downward at 5.0 m/s. The basketball’
vlabodo [156]

To solve this problem we will apply the concepts related to the conservation of momentum. This can be defined as the product between the mass and the velocity of each object, and by conservation it will be understood that the amount of the initial momentum is equal to the amount of the final momentum. By the law of conservation of momentum,

m_1u_1+m_2u_2 = m_1v_1+m_2v_2

Here,

m_1 = Mass of Basketball

m_2 = Mass of Tennis ball

u_1 = Initial velocity of Basketball

u_2 = Initial Velocity of Tennis ball

v_1 = Final velocity of Basketball

v_2 = Final velocity of the tennis ball

Replacing,

(0.8)(0.5)+(0.1)(-5.0)=(0.8)(0.3)+(0.1)v_2

Solving for the final velocity of the tennis ball

v_2 = 11m/s^2

Therefore the velocity of the tennis ball after collision is 11 m/s

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3 years ago
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