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3 years ago

15

Plants depend on the atmosphere for the largest source of

1 answer:

Sonja [21]3 years ago

6 0

The correct answer that would best complete the given statement above would be CARBON DIOXIDE (CO2). Plants <span>depend on the atmosphere for the largest source of carbon dioxide. Carbon dioxide is considered as an important trace gas in the Earth's atmosphere which constitutes about 0.04% of it. Hope this answer helps. </span>

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What is the velocity in meters per second of a runner who runs exactly 110 m toward the beah in 72 seconds?

rjkz [21]

B) 1.53 m/s towards the beach

8 0

4 years ago

Read 2 more answers

a graph depicts force versus position. what represents the work done by the force over the given displacement?

atroni [7]

The area under the graph. W = f d cos(theta), so you want the number that is force times displacement, which corresponds to the area under the graph.

7 0

3 years ago

Does sound travel much faster than light ?

Kitty [74]

Answer:

nothing travels faster than light

Example:

You’ll always see lightning before you hear it, because typically lightning will be a mile away, two miles away.

4 0

4 years ago

A copper sphere 10 mm in diameter is dropped into a 1-m-deep drum of asphalt. The asphalt has a density of 1150 kg/m3 and a visc

kvasek [131]

Answer:

t = 1964636.542 sec

Explanation:

Given data:

sphere diameter is 10 mm

Density is 1150 kg/m^3

viscosity 105 N s/m^2

We knwo that time taken by sphere can be calculated by following procedure

$\tau = \mu \frac{du}{dy}$

$\frac{F}{A} = \mu \frac{du}{r}$

$\frac{\rho_C -\rho_{asphalt} gv}{2 \pi rL} = 10^5 \frac{du}{r}$

Solving for du

$du = \frac{ (8933 - 1150) 9.81 \frac{4}{3} \pi (10\times 10^{-3})^3}{2\pi \times 1\times 10^5}$

$du = u = 5.09\times 10^{-7}$

$u = \frac{1}{t}$

$t = \frac{1}{5.09\times 10^{-7}} = 1964636.542 sec$

6 0

4 years ago

The largest visible-light telescopes in the world use what device to collect as much light as possible before the light is broug

AlexFokin [52]

Answer:

Option C

Explanation:

Visible telescopes are the telescopes which are sensitive in the spectrum of the light in the visible range.

The visible light telescopes are of three types out of which the reflecting telescopes uses the mirror so as to collect light as much as it can.

Convex mirror is used in such telescopes to collect all the light that falls on it and then the mirror reflects the light back to the focus.

Thus the mirror acts a bucket of light for its collection and the helps to form the world's largest visible light telescope.

4 0

4 years ago