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3 years ago

HELP ME PLEASEEEEEEEEEEEEEE

Physics

2 answers:

Alex73 [517]3 years ago

7 0

The answer is DNA, I’m not sure but I think that it is

elena-14-01-66 [18.8K]3 years ago

3 0

Answer:

DNA is the best choice

Explanation:

cuz photosynthesis is a process and the nucleus doesn't have a brain so DNA would be your best choice

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Please help! Didn’t have right subject so i chose one that may be similar.

Vsevolod [243]

Answer:

Moon's Orbit

Explanation:

8 0

3 years ago

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How would you best define the word drug?

elena-14-01-66 [18.8K]

Answer:

Explanation:

Definition of drug: a medicine or other substance which has a physiological effect when ingested or otherwise introduced into the body

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3 years ago

Reacting molecules must hit each other with sufficient energy in order to form products,what theory is it

7nadin3 [17]

It is called Arrhenius collision theory.

4 0

3 years ago

An AM radio station broadcasts isotropically (equally in all directions) with an average power of 3.40 kW. A receiving antenna 6

lara [203]

To solve the problem we will apply the concepts related to the Intensity as a function of the power and the area, as well as the electric field as a function of the current, the speed of light and the permeability in free space, as shown below.

The intensity of the wave at the receiver is

$I = \frac{P_{avg}}{A}$

$I = \frac{P_{avg}}{4\pi r^2}$

$I = \frac{3.4*10^3}{4\pi(4*1609.34)^2} \rightarrow 1mile = 1609.3m$

$I = 6.529*10^{-6}W/m^2$

The amplitude of electric field at the receiver is

$I = \frac{E_{max}^2}{2\mu_0 c}$

$E_{max}= \sqrt{2I\mu_0 c}$

The amplitude of induced emf by this signal between the ends of the receiving antenna is

$\epsilon_{max} = E_{max} d$

$\epsilon_{max} = \sqrt{2I \mu_0 cd}$

Here,

I = Current

$\mu_0$ = Permeability at free space

c = Light speed

d = Distance

Replacing,

$\epsilon_{max} = \sqrt{2(6.529*10^{-6})(4\pi*10^{-7})(3*10^{8})(60.0*10^{-2})}$

$\epsilon_{max} = 0.05434V$

Thus, the amplitude of induced emf by this signal between the ends of the receiving antenna is 0.0543V

6 0

4 years ago

FREE POINTS!

san4es73 [151]

Answer:

Both conduction and convection require matter to transfer heat. ... Convection occurs when warmer areas of a liquid or gas rise to cooler areas in the liquid or gas. Cooler liquid or gas then takes the place of the warmer areas which have risen higher. This results in a continuous circulation pattern.

Explanation:

HOPE THIS HELPS!!!

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3 years ago

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