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malfutka [58]
3 years ago
13

16. What is osteoporosis? How can it affect bones? Why is calcium important to bones?

Biology
2 answers:
storchak [24]3 years ago
8 0
<span>a medical condition in which the bones become brittle and fragile from loss of tissue, typically as a result of hormonal changes, or deficiency of calcium or vitamin D</span>
brilliants [131]3 years ago
4 0
Osteoporosis is <span>a medical condition in which the bones become brittle and fragile from loss of tissue, typically as a result of hormonal changes. </span>Our bones store calcium in addition to providing support for our bodies.
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Tina used 500 N of force to move a desk. The desk weighed 300 N, and she
larisa86 [58]

Answer:

The correct answer is - C. Multiply 500 by 1.5.

Explanation:

Given:

Force to move a desk = 500 N

weight of desk = 300 N

displacement = 1.5 meters

work done by Tine = ?

Formula:

work done (W) = F*d

where F is the force applied on the desk and d is the displacement of the desk.

Solution:

As the displacement is perpendicular to the weight of the desk, therefore, the work done by weight is zero. The work done to the displacement of the desk would be =

W = F*d

= 500*1.5

= 750 J

Thus, the correct answer would be option C.

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2) Farming has a much lower carbon footprint than oil extraction and processing does.

3) Plant-based plastic can be biodegradable.

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3 years ago
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What do scientist use to clean fossils?
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