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3 years ago

Highlight two factors which show that heat from the sun does reach the earth surface by conversation

Physics

1 answer:

svetlana [45]3 years ago

7 0

Answer:

Radiation

Explanation:

The sun heat the earth by the process called radiation.

Radiation is form of heat transfer method just like convection and conduction. Radiation heat transfer does not require medium to propagate, unlike its other two counterparts. There is no medium between earth and sun.

The radiation heat travels through space in form of waves. Like the electromagnetic wave with a specific speed and energy.

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How many O atoms are in 8 molecules of C²O⁴H

MariettaO [177]

Answer:

32 oxygen atoms

6 0

3 years ago

13. Convert 30° C to Fahrenheit doo a. 30 F b. 86 F 34 F d. 100 F

GREYUIT [131]

Answer:86F

Explanation:

Using the formula

F=(°Cx9/5)+32

F=(30x9/5)+32

F=(270/5)+32

F=54+32

F=86F

6 0

3 years ago

You are given a sample of metal and asked to determine its specific heat. You weigh the sample and find that its weight is 27.2

garri49 [273]

Answer:

c=326.5177 J/kg.K

Specific heat is c=326.5177 J/kg.K

Explanation:

In order ti find the specific heat, we will proceed as follow:

Formula we are going to use is:

$Q=m*c*\Delta T$

Where:

Q is the heat energy added

m is the mass of sample

c is the specific heat

$\Delta T$ is the temperature Rise.

First we will find the mass:

Weight=m*g (g is gravitational acceleration=9.8 m/s^2)

$m=\frac{weight}{g} \\m=\frac{27.2}{9.8} \\m=2.7755 \ kg$

Rearranging above formula:

$c=\frac{Q}{m* \Delta T}$

$c=\frac{1.45*10^4}{2.7755*16}$

c=326.5177 J/kg.K

Specific heat is c=326.5177 J/kg.K

5 0

3 years ago

1. Two balloons are charged with an identical quantity and type of charge: -6.25C. They are held apart at a separation distance

Degger [83]

Answer:

The electric force between them is 878.9 N

Given:

Identical charge C

Separation between two charges m

For finding the electrical force,

According to the coulomb's law

Here, force between two balloons are repulsive because both charges are same.

Where N Therefore, the electric force between them is 878.

Explanation:

4 0

2 years ago

In the compound MgCl2, how many atoms of Mg are there?

Aleksandr [31]

There is 1 Mg and 2 Cl i think

3 0

3 years ago