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zvonat [6]
3 years ago
13

what is the recommended daily dosage of flouride for a child over three years of age living in an area where drinking water is f

ree fluoride
Physics
1 answer:
Finger [1]3 years ago
7 0
<span>What is the recommended daily dosage of flouride for a child over three years of age living in an area where drinking water is free fluoride</span>child:

3-6: 0.5mg 
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Which jovian planet should have the most extreme seasonal changes? a. Saturn b. Neptune c. Jupiter d. Uranus
Maksim231197 [3]

Answer:

D). Uranus.

Explanation:

Jovian planets are described as the planets which are giant balls of gases and located farthest from the sun which primarily include Jupiter, Saturn, Uranus, and Neptune.

As per the question, 'Uranus' is the jovian planet that would have the most extreme seasonal changes as its tilted axis leads each season to last for about 1/4 part of its 84 years orbit. The strong tilted axis encourages extreme changes in the season on Uranus. Thus, <u>option D</u> is the correct answer.

3 0
3 years ago
Describe the motion of an object that has an acceleration of 0m/s2
solong [7]
Zero acceleration means the object's velocity is not changing.
So the object is moving in a straight line, at a constant speed
that could be anything (including zero) as long as it's constant.
6 0
3 years ago
On a roller coaster ride at an amusement park, a car travels from 7.6 m/s to 56 m/s in 3 seconds. whats the cars acceleration?
nataly862011 [7]

Acceleration is defined as rate of change in velocity

So we can write its formula as

a = \frac{v_f - v_i}{t}

here we know that

v_f = final velocity = 56 m/s

v_i = initial velocity = 7.6 m/s

t = time interval to change the velocity = 3 s

now we will plug in all values in the above equation

a = \frac{56 - 7.6}{3}

a = \frac{48.4}{3}

a = 16.13 m/s^2

so here roller coaster will accelerate at rate of 16 m/s^2 and hence correct answer is "option d"

3 0
3 years ago
A gorilla weighs 8.00x10^2N and swings from vine to vine. As the gorilla grads a new vine, both vines make an angle of 30 degree
Yakvenalex [24]

Answer:

461.88 N  

Explanation:

Let tension in each vine be T .

The vertical component of this tension of both the vine will add up and balance the weight .

2T cos 30 = mg

2 T x cos 30 = 800

T  = 800 / (2 x cos30 )

= 461.88 N  

6 0
2 years ago
A man weighing 700 N lifts a 50.0 N object 2.0 m high. He uses a lever and with a force of 10.0 N. What is the resistance force
umka21 [38]
For the answer to the question above, asking what is the resistance force if a man weighing 700 N lifts a 50.0 N object 2.0 m high. He uses a lever and with a force of 10.0 N. 
we can use the formula below for calculating lever
<span>thus, Le / Lr = 50 / 10 = 5 </span>

5 0
3 years ago
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