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4 years ago

Sally wants to study the distribution of

Physics

1 answer:

inessss [21]4 years ago

4 0

Answer:

A)Count all the dandelions she sees.

Explanation:

Dandelions grow from seeds and do not spread asexually from stolons or runner; they have a single tap root. However, they can and do reproduce asexually by seed. They are capable of producing viable seed without need of cross-fertilization, a process known as "apomixis".

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Astronomers use the _______ of stars to determine how hot they are and their _______ to estimate how far away they are. A. brigh

ss7ja [257]

Astronomers use the color of stars to determine how hot they are and their brightness to estimate how far away they are. <em>(D)</em>

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4 years ago

U are asked to measure the amount of liquid held in a sports drink bottle.which is an appropriate unit of measurement? is grams,

saul85 [17]

Milliliters would be used to find the volume AKA amount of liquid

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3 years ago

A wire of length 5mm and Diameter 2m extends by 0.25 when a force of 50N was use. calculate the

bazaltina [42]

Answer and Explanation:

Data provided in the question

Force = 50N

Length = 5mm

diameter = 2.0m = $2\times 10^{-3}$

Extended by = 0.25mm = $0.25\times 10^{-3}$

Based on the above information, the calculation is as follows

a. The Stress of the wire is

$= \frac{force\ applied}{area\ of \ circle}$

here area of circle = perpendicular to the are i.e cross-sectional i.e

= $\frac{\pi d^{2}}{4}$

= $\frac{\pi(2\times 10^{-3})^2}{4}$

Now place these above values to the above formula

$= \frac{4\times 50}{\pi\times 4 \times 10^{-6}} \\\\ = \frac{50}{\pi}$

= 15.92 MPa

As 1Pa = 1 by N m^2

So,

MPa = 10^6 N m^2

b. Now the strain of the wire is

$= \frac{Change\ in\ length}{initial\ length} \\\\ = \frac{0.25\times 10^{-3}}{5}$

= $5 \times 10^{-5}$

3 0

4 years ago

To increase the current in a circuit, which can be increased?

wariber [46]

Answer:

A. Voltage

Explanation:

I got a 100% on the quiz on edg so trust me

4 0

3 years ago

Which illustrates different states of a substance?

DanielleElmas [232]

Answer:

Ice and water vapor.

Explanation:

Ice is a solid state and water vapor is gas. Gas comes from water being heated. Plasma is also a fourth, less known, state of matter. I hope this helps. :)

6 0

3 years ago

Read 2 more answers