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julsineya [31]
3 years ago
15

It is recommended that adults should get at least 150 minutes of moderate-intensity physical activity each week. they should als

o do strength-training exercises. what is the minimum number of days that adults should do strength-training exercises each week?select one of the options below as your answer:a. one day a weekb. two days a weekc. three days a weekd. four days a week
Physics
1 answer:
shepuryov [24]3 years ago
4 0
I think it's three days. I read it in assignment potion before but it's kinds fuzzy but I believe it's three days. Hopefully thats correct.
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Which of the following could be classified as a problem that could be answered with a technological design?
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I think the answer is 4) All of the above!! :)
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Why does the sound of a person’s voice sound different underwater than when they are speaking in air?
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Melissa heated a few blue crystals in a test tube. After a few minutes, she observed that the crystals had turned white and a fi
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2 years ago
How much pure gold (24/24) is to be added to 15.0 grams of 14 K gold (14/24) to obtain 18 K gold (18/24)?
Arlecino [84]

Answer:

10 gram gold is added

Explanation:

given data

pure gold = (24/24)

added = 15 grams

gold = 14 K  ( 14/24)

gold = 18 K ( 18/24)

to find out

How much pure gold added

solution

we know here that when we add gold to get 20 K gold or 22K

so we added here 15 gram 14 K

we consider here m is pure gold added

so by composition here

we get

15 (14K)  + m ( 24 K) = ( 15 + m ) (18)    ...................1

solve it and find m

m = 10

so 10 gram gold is added

8 0
3 years ago
Point charges of 28.0 µC and 42.0 µC are placed 0.500 m apart. (a) At what point (in m) along the line connecting them is the el
olga_2 [115]

Answer: a) electric field will be zero at zero meters apart

b) for smaller charge q, E = 6.048X10^6N/m towards away from the charge,

for bigger charge Q, E = 4.032X10^6N/m

Explanation:

Detailed explanation and calculation is shown in the image below.

6 0
3 years ago
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