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Sedaia [141]
4 years ago
15

An astronomer wants to visualize the relative distances between planets in our solar system. A biologist wants to examine the br

anching of blood vessels within the body. A chemist wants to see the angles between bonds in a molecule. A geologist wants to view the layers of the Earth from core to crust.
What is the best method that all of these different scientists could use to perform their investigations?

A. perform a field study
B. create a controlled laboratory experiment
C. build a model
D. all of these
Physics
2 answers:
Svetradugi [14.3K]4 years ago
6 0

Answer:

B it builds a model

Explanation:

its on study island

ArbitrLikvidat [17]4 years ago
6 0

Answer: C. build a model

Explanation:

Build a model is the correct method so as to perform the investigation as the model can be used to simulate the astronomical, biological, chemical and geological natural processes occurring in nature. The model can give an idea about the cause of a natural phenomena. It can be used to mention the distance between the two separate bodies, morphological features of body of living organisms, the angles between the bonds of the molecules, it can also be used to describe the layers of the earth from core to crust.

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Who is the scientist that gave us the photon as a way of describing light as a particle?
Montano1993 [528]

Answer: Albert Einstein

Explanation:

Light can be considered as a wave or as particles, in this context Einstein proposed that light behaves like a stream of particles called <u>photons</u> with an energy, in order to correctly explain the photoelectric effect (in fact he won the 1921 Nobel Prize in Physics because of this explanation).

To uderstand it better:

The photoelectric effect is a fenomenom that consists in the emission of electrons that occurs when light falls on a metal surface under certain conditions.

This  can only be explained based on the corpuscular model of light, that is, light is quantized.

So, Einstein theorized light as a stream of energy packets called photons, this energy is able to pull an electron out of the crystalline lattice of the metal and communicate, in addition, a kinetic energy.

4 0
3 years ago
Suppose you have 1 kg each of iron, glass, and water, and all three samples are at 10°C.
Kipish [7]

To solve this problem it is necessary to apply the concepts related to heat exchange and Entropy.

The temperature and mass remain constant, therefore the entropy values will be the only ones to change.

Of the three elements given their entropy values are given by

\Delta S_{iron}=0.45J/gmC

\Delta S_{glass}=0.8J/gmC

\Delta S_{water}= 4.186J/gmC

Part A) From thermodynamic theory we know that temperature is inversely proportional to entropy

T = \frac{E}{\Delta S} \rightarrow Energy remains constant

\Delta t \propto \frac{1}{S}

Therefore the order would be

Lowest Temperature= Water

Medium Temperature= Glass

Highest Temperature=Iron

Part B) In the case of Energy the opposite happens because it is proportional to the entropy, then

E = T(\Delta S) \rightarrowTemperature is constant

E \propto S

Lowest Energy = Iron

Medium Energy = Glass

Highest Energy = Water

6 0
3 years ago
Hii can someone please help me with this thank u ​
Illusion [34]

Answer:

1. :uniformly accelerated motion

2. .0m/s

6 0
3 years ago
Read 2 more answers
How heavy is an object that displaces 400N of water in a pool?
julia-pushkina [17]
All we can say is that the object's volume is about 41 liters. That's the same as the volume of water displaced.

We can't say anything about the object's weight. There is no direct connection between the weight of the object and the weight of the water it displaces.
7 0
3 years ago
A boy pushes on a box of mass 39 kg and it moves at an acceleration of 7.8m/s2. With what force does the boy push on the box?
expeople1 [14]
F = ma, where m is the mass of the body and a its acceleration.
So F = 39x7.8 = 280.8 N
5 0
4 years ago
Read 2 more answers
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