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3 years ago

A thermometer measures its own temperature ? What does it mean?

1 answer:

azamat3 years ago

8 0

When you put a thermometer in your mouth , it becomes the same temperature as you then it starts to measure the temperature of itself

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Physics student is dropped. If they reach the floor at a speed of 3.2 m/s, from what height did they fall?

Mekhanik [1.2K]

Answer:

0.52 m

Explanation:

The motion of the studnet is an accelerated motion, with constant acceleration $g=9.8 m/s^2$ (acceleration of gravity) toward the ground. We can find the distance covered by the student (which is equal to the height from which he falls) by using the SUVAT equation:

$v^2 -u^2 = 2ad$

where

v = 3.2 m/s is the final speed

u = 0 is the initial speed

a = 9.8 m/s^2 is the acceleration

d is the distance covered

By re-arranging the equation, we find:

$d=\frac{v^2-u^2}{2a}=\frac{(3.2 m/s)^2-0}{2(9.8 m/s^2)}=0.52 m$

5 0

4 years ago

An ideal blackbody is an object that __________.a. absorbs most of the energy that strikes it. b. only absorbs energy at ultravi

STALIN [3.7K]

Answer:

c. absorbs all the energy that strikes it.

Explanation:

An ideal black body is an object that absorbs every light energy (irrespective of the wavelength and direction) that strikes it without reflecting any in return.

Such objects or bodies usually appear perfectly black and will only emit radiation when heated to a very high temperature.

6 0

3 years ago

Willing to give out Brainliest: 3.00 m^3 of water is at 20.0°C If you raise its temperature to 60.0°C, by how much will its volu

lozanna [386]

Answer:

The answer is below

Explanation:

Charlee's law states that the volume of a gas is directly proportion to the temperature of the gas at constant pressure. That is:

V = kT, where V = volume and T = temperature, k = constant. Therefore:

V / T = k

$\frac{V_1}{T_1}=\frac{V_2}{T_2}$

Given that: $V_1=3\ m^3, T_1=20^oC=(20 + 273)K=293\ k,T_2=60^oC=(60 + 273)K=333\ k.\\\\\frac{V_1}{T_1}=\frac{V_2}{T_2}\\\\\frac{3}{293}=\frac{V_2}{333} \\\\V_2=\frac{3}{293}*333\\\\V_2=3.41\ m^3\\$

The new volume is 3.41 m³. That is it expands by 0.41 m³

4 0

3 years ago

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Please please answer this! explain the kinetic molecular theory ( i don't understand how they explain it in my lesson so if some

Bess [88]

Answer:

Explanation:

Basically, Kinetic Molecular Theory says that gas particles are in constant motion and that they show perfectly elastic collisions.

An elastic collision is a collision in which there is no net loss in kinetic energy in the system as a result of the collision.

So the kinetic molecular theory says that gas particles stay moving constantly and don't lose energy when they run into each other.

Hope this helps!

4 0

3 years ago

The organism shown above belongs to A. the plant kingdom. B. both the animal kingdom and the protist kingdom. C. the animal king

Bumek [7]

The organism shown above belongs to "the animal kingdom".

Answer: Option C

Explanation:

The biological classification's hierarchy involves eight important taxonomic ranks. They are written below in decreasing order: Life > Domain > Kingdom > Phylum > Class > Order > Family > Genus > Species.

The U.S and Canada have historically used a six-kingdom scheme in their traditional textbook, such as Plantae, Animalia, Protista, Fungi, Archaea / Archaebacteria, and Bacteria / Eubacteria. The given image depicts snake which come under "Animalia Kingdom", carnivorous reptiles to suborder Serpentes.

6 0

3 years ago

Read 2 more answers