2 years ago

Please help this is due in an hour lol

Mathematics

2 answers:

Reil [10]2 years ago

6 0

Answer:

Step-by-step explanation:

Leona [35]2 years ago

3 0

Answer: I can see the page it say file is deleted

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What is the mean of the data set 17,24,26,13

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If 2 and 4 each divide q without remainder, which of the following must q divide

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Evaluate the expression when x = 3.<br><br> x² + 6x - 3

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2 years ago

If I could get help thank u

nika2105 [10]

An acute angle is infact 90 degrees, therefore your answer is correct.

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Suppose that 5 J of work is needed to stretch a spring from its natural length of 30 cm to a length of 39 cm.

vesna_86 [32]

Answer

given,

work = 5 J

spring stretch form 30 cm to 39 cm

$W = \dfrac{1}{2}kx^2$

x = 0.39 - 0.30 = 0.09 m

$5 = \dfrac{1}{2}k\times 0.09^2$

$k = \dfrac{5\times 2}{0.09^2}$

k = 1234.568 N/m

a) work when spring is stretched from 32 cm to 34 cm

x₂= 0.34 -0.30 = 0.04 m

x₁ = 0.32 - 0.30 = 0.02

$W = \dfrac{1}{2}k(x_2^2-x_1^2)^2$

$W = \dfrac{1}{2}\times 1234.568 \times (0.04^2-0.02^2)^2$

W = 0.741 J

b) F = k x

25 = 1234.568 × x

x = 0.0205 m

x = 2.05 cm

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3 years ago