Answer:
It is caused by air molecules colliding with smoke particles
Explanation:
To start with, Brownian motion is the erratic or irregular movement of very small particles in a medium due to continuous bombardment by molecules that surround the medium.
Thus, smoke moves in a Zig-Zag manner (Brownian motion) due to continious air bombardment. If it were pollen grain suspended in water, the erratic movement (Brownian motion) of the grains is caused by bombardment from water molecules.
What is the mass of an object that experiences a gravitational force of 685 N near Earth's surface where g
Answer:
mass = GPE divided by gxh
Explanation:
Answer:
69.9 kg
Explanation:
w = mg
m = w/g
m = 685/9.8
m = 69.9 kg
A scientist would most likely need to update her model win it a has become too simple be no longer supports the latest results see reduces the need for verbal explanation of data or tea no longer appears interesting
The question is incomplete, the complete question is;
A scientist would most likely need to update her model when it
a.has become too simple.
b.no longer supports the latest results.
c.reduces the need for verbal explanation of data.
d.no longer appears interesting.
Answer:
b.no longer supports the latest results.
Explanation:
In science, models are prepared to explain experimental results. Each model must have a solid framework supported by experimental results.
However, science is never static. Given the dynamic nature of science, it is possible that latest experimental evidence may no longer support the existing model and the model will need to be reviewed in the light of emerging experimental results.
what is meant by si unit?
Answer:
The SI base units are the standard units of measurement defined by the International System of Units (SI) for the seven base quantities of what is now known as the International System of Quantities: they are notably a basic set from which all other SI units can be derived.
Explanation:
Helpp! If the box moves 12m to the right calculate the work done on the box.
Answer:
80 times 12=960
Explanation:
You have to do the equation for work, the equation is work= force times distance, the force here is 80newtons, the distance is 12meters, so you would do 80 times 12 to get your answer of 960
Friction converts Kinetic energy to what type of energy?
Answer: Friction between the two surfaces converts kinetic energy into thermal energy.
Explanation: Friction occurs because no surface is perfectly smooth. Rougher surfaces have more friction between them. Friction produces heat because it causes the molecules on rubbing surfaces to move faster and have more energy.
Which of the following are vector quantities? Select all that apply.
10 degrees Fahrenheit
10 m
7 miles southwest
9 steps to the left
0 75 mph north
Answer:
7 miles southwest
9 steps to the left
75 mph north
Explanation:
A vector quantity has magnitude and directions. Vector is a terminology used to describe physical quantities with this attribute.
The opposite of vectors are scalar quantities. They only have magnitude but no direction.
The choices which indicates a specific direction is a true vector.7 miles south west is displacement of a body
9 steps to the left is displacement
75mph north is a velocity
Displacement and velocity are physical quantities that are vectors
The day VFR visibility and cloud clearance requirements to operate over the town of Cooperstown, after departing and climbing out of the Cooperstown Airport at or below 700 feet AGL are:_________A. 3 miles and clear of cloudsB. 1 mile, 1000 feet above, 500 feet below, and 2000 horizontal from cloudsC. 1 miles clear of cloudsD. 3 miles, 1000 feet above, 500 feet below, and 2000 horizontal from clouds
Answer:
The correct option is;
C. 1 mile clear of clouds
Explanation:
Given that the indicated airspace location is at or below 700 feet AGL therefore, it is taken as being in the region of a class G airspace which covers the airspace regions from the base up to and equal to 1,200 feet beneath the class E airspace and the requirement for VFR flight for class G are 1 mile and clear of clouds.
Why do we need measurement
Answer:
Measurement are tools to help know how long or wide something is
Explanation:
Answer:
There is many reasons we need measurement one is to answer questions. Another reason is we need it in are daily life, many jobs require knowing how to use measurements like construction workers and factory's. Without measurement driving and daily life tasks would be difficult.
Por que es posible suponer que la energía térmica que gana el agua en un calorímetro es igual a la energía térmica que pierde la muestra que se va a probar
Answer:
El material del calorímetro es aislante, conducción térmica entre sustancias y alrededores casi nula.
Explanation:
Es posible suponer que la energía térmica que gana el agua en un calórimetro equivale a la energía térmica perdida por la muestra que se prueba, en tanto que el material del calorímetro se caracteriza por ser de naturaleza aislante, es decir, que no permite las interacciones de energía entre los fluidos al interior y los alrededores del calorímetro.
Describe how a neutral material becomes attracted to a negatively charged object brought near it.
Answer:
Electric force
Explanation:
It’s like static stuff
⚠️ HELPPPP PLEASE ⚠️
Which of the following was established by the Continental Congress?
O The Smithsonian
O The Supreme Court
O The US Post Office
O the Continental Army
Answer:
The second Continental Congress started the Continental Army
Explanation:
The Smithsonian was established by the continental congress
How much force is required to raise a 0.2 kg mass?
please only answer if you know it.
We have that for the Question "How much force is required to raise a 0.2 kg mass?" it can be said that
The Force required to raise W=1.962N will be F=1.962N since F=W
F=1.962N
From the question we are told
How much force is required to raise a 0.2 kg mass?
Generally the equation for the Weight is mathematically given as
[tex]W=M*g\\\\W=0.2*9.81\\\\W=1.962N\\\\[/tex]
Therefore
The Force required to raise W=1.962N will be F=1.962N since F=W
F=1.962N
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