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Blizzard [7]
3 years ago
7

Help! Will mark brainliest

Mathematics
1 answer:
k0ka [10]3 years ago
5 0

Answer:

The correct answer is D!! Please choose me brainliest!!!  Thank You!!!

Step-by-step explanation:

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If a 24-kg mass stretches a spring 15 cm, what mass will stretch the spring 10 cm
natulia [17]

Answer:

<h2>16kg</h2>

Step-by-step explanation:

 This problem is borers on elasticity of materials.

according to Hooke's law,<em> "provided the elastic limit of an elastic material is not exceeded the the extension e is directly proportional to the applied force."</em>

F= ke

where F is the applied force in N

          k is the spring constant N/m

          e is the extension in meters

Given data

mass m= 24kg

extensnion=15cm in meters= \frac{15}{100}= 0.15m

we can solve for the spring constant k

we also know that the force F = mg

assuming g=9.81m/s^{2}

therefore

24*9.81=k*0.15\\235.44=k*0.15\\k=\frac{235.44}{0.15} \\k=1569.6N/m\\

We can use this value of k to solve for the mass that will cause an extension of  10cm= 0.1m

x*9.81=1569.6*0.1\\\\x= \frac{156.96}{9.81} \\\x= 16kg

5 0
3 years ago
The polyatomic ion with the formula HPO42- is called
schepotkina [342]

Answer:

hydrogen phosphate

Step-by-step explanation:


6 0
3 years ago
Read 2 more answers
Solve 4m plus 2n equals 5n for m.
RSB [31]

Answer:

m = (3/4) n

Step-by-step explanation:

4m + 2n = 5n

The subtraction property of equality states that we can subtract 2n from both sides to isolate the m and its coefficient to get

4m = 3n

The division property of equality states that we can divide 4 from both sides to isolate only the m (we divide by 4 because anything divided by itself equals 1) to get

m = (3/4) n

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3 years ago
There are 10 minutes between each class you have 6 minutes left after
kari74 [83]

Answer: 3 feet a minute

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2 years ago
I am giving 15 points to however does this for me
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You would spend 25 minutes on the elliptical trainer, and 15 minutes on the stationary bike.
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