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2 years ago

9

Solar energy travels to the Earth in many forms, such as ultraviolet radiation, infrared radiation, and visible rays. These vari

ous forms of solar energy have what?

1 answer:

galben [10]2 years ago

4 0

Radiation. Hope this Helps

You might be interested in

Suggest why sodium and hydrogen ions do not diffuse at the same rate

Troyanec [42]

Answer:

sodium has got ionic bonds that are weak

compared to hydrogen covalent bonds that are strong

8 0

2 years ago

To construct the galvanic cell illustrated above, the salt bridge was prepared by soaking a piece of cotton in 5.0MNaNO3(aq) bef

dalvyx [7]

Answer:

The cell reaction reaches equilibrium quickly and the cell emf becomes zero.

Explanation:

The purpose of a salt bridge is not to move electrons from the electrolyte, its main function is to maintain charge balance because the electrons are moving from one-half cell to the other.

A solution of a salt that dissociates easily is normally used. Water is ineffective at functioning as a salt bridge. Hence the effect stated in the answer.

4 0

2 years ago

the half life of the radioactive element strontium-90 is 29.1 years. If 16 grams of strontium-90 are initially present, how many

8_murik_8 [283]

Answer:

4 g after 58.2 years

0.0156 After 291 years

Explanation:

Given data:

Half-life of strontium-90 = 29.1 years

Initially present: 16g

mass present after 58.2 years =?

Mass present after 291 years =?

Solution:

Formula:

how much mass remains =1/ 2n (original mass) ……… (1)

Where “n” is the number of half lives

to find n

For 58.2 years

n = 58.2 years /29.1 years

n= 2

or 291 years

n = 291 years /29.1 years

n= 10

Put values in equation (1)

Mass after 58.2 years

mass remains =1/ 22 (16g)

mass remains =1/ 4 (16g)

mass remains = 4g

Mass after 58.2 years

mass remains =1/ 210 (16g)

mass remains =1/ 1024 (16g)

mass remains = 0.0156g

8 0

2 years ago

Read 2 more answers

__________ is one of many factors that can determine the rate of alcohol absorption.

12345 [234]

Food consumption affects the rate of alcohol absorption in the bloodstream.

Explanation:

The type of food and therefore the amount<span> of food that </span>is a gift<span> in your </span>epithelial duct once you<span> consume alcohol have </span>the foremost<span> direct </span>impact<span> on </span>the speed<span> of alcohol absorption.</span>

<span>When you consume alcohol on </span>the associate<span> empty </span>abdomen<span>, the alcohol </span>is sometimes<span> absorbed </span>within the<span> blood </span>among<span> fifteen minutes to two-and-a-half hours. If </span>you have got<span> a moderate </span>quantity<span> of food in your </span>abdomen once you<span> drink, that speed slows </span>all the way down to<span> thirty minutes </span>to a few<span> hours. If you’re drinking on a full </span>abdomen<span>, alcohol absorption ranges from </span>3 to 6<span> hours.</span>

6 0

2 years ago

A food product is being frozen in a system capable of removing 6000 kJ of thermal energy. The product has a specifi c heat of 4

lapo4ka [179]

Answer : The exit temperature of the product is, $-35.2^oC$

Explanation :

Total heat = Heat lost by liquid + Latent heat of fusion + Heat lost by frozen

$Q=m\times c_1\times (T_2-T_1)+m\times L_f+m\times c_2\times (T_4-T_3)$

where,

Q = Total heat = 6000 kJ

m = mass of product = 15 kg

$c_1$ = specific heat of liquid = $4kJ/kg^oC$

$L_f$ = latent heat of fusion = $275kJ/kg$

$c_2$ = specific heat of frozen = $2.5kJ/kg^oC$

$T_1$ = initial temperature of liquid = $2^oC$

$T_2$ = final temperature of liquid = $10^oC$

$T_3$ = initial temperature of frozen = ?

$T_4$ = final temperature of frozen = $2^oC$

Now put all the given value in the above expression, we get:

$6000kJ=[15kg\times 4kJ/kg^oC\times (10-2)^oC]+[15kg\times 275kJ/kg]+[15kg\times 2.5kJ/kg^oC\times (2-T_3)^oC]$

$T_3=-35.2^oC$

Thus, the exit temperature of the product is, $-35.2^oC$

7 0

2 years ago