Answer:
the liquid has less height than the mercury
h_{ liquid} = [tex]\frac{\rho_{Hg} }{\rho_{liqid}} \ h_{Hg}[/tex]
Explanation:
The pressure as a function of the height is given by
P = ρ g h
where ρ is the density of the liquid, g the acceleration of gravity and h the height reached by the column of the liquid
In that case they say that the pressure is the standard one that is P = 1.01 10⁵ Pa = 760 mmHg
The first way to give the pressure is in SI units and the second way is the height that the mercury column reaches
In the case of building a barometer with a liquid that has a density greater than that of mercury
ρ_liquid > ρ_Hg
the pressure
P =ρ_lquid g h_liquid
if we have the same pressure
ρ_{Hg} g h_{Hg} = ρ_{liquid} g h_{liquid}
h_{ liquid} = [tex]\frac{\rho_{Hg} }{\rho_{liqid}} \ h_{Hg}[/tex]
therefore the liquid has less height than the mercury
what is half line in physics?
What causes variations in temperature on Earth?
There are many more things that cause temperature fluctuation around the average without causing the long-term average itself to change. This change is attributed by natural processes such as volcanic activity, solar variability, plate tectonics, or shifts in the Earth's orbit.
A car travels from rest (0) to 60 m/s in 5 seconds. What is its acceleration?
Answer:
12 meters per seconds......
Explanation:
60/5=12
A car travels from rest to 60 m/s in 5 seconds, so its acceleration is 12 m/[tex]{s}^2[/tex] (60-0/5), and the acceleration is calculated by subtracting the final from the initial and by diving with the time.
What is the significance of the acceleration?Acceleration is the unit that describes the change in velocity, such as the quickness or slowness of the car, and when the acceleration is very high, there is a high chance of colliding and an accident occurring, but this is important for vehicles such as sports cars and racing cars. While low acceleration is used in magnetic resonance imaging in the medical field, it is also used in the industrial sector for robotics, etc.
Hence, a car travels from rest to 60 m/s in 5 seconds, so its acceleration is 12 m/[tex]{s}^2[/tex] (60-0/5), and the acceleration is calculated by subtracting the final from the initial and by diving with the time.
Learn more about the acceleration here.
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What is a benefit of a medically supervised rehabilitation program?
A. Doctors can safely monitor the physical demands of detox
A. Doctors can safely monitor the physical demands of detoxB. Doctors can provide accountability and emotional support
A. Doctors can safely monitor the physical demands of detoxB. Doctors can provide accountability and emotional supportC. Doctors can prescribe drugs to counteract the effects of alcohol
A. Doctors can safely monitor the physical demands of detoxB. Doctors can provide accountability and emotional supportC. Doctors can prescribe drugs to counteract the effects of alcoholD. Doctors can help shorten the time needed for detox and rehab
a miner has a mixture of gold and sand he heats the mixture and the gold melts if the density is 19.3g/cm3 will the sand float
Answer:
the explanation is attache d to a picture
What is the mathematical equation for the electric force between two charges? Identify each variable.
Answer: F=kq1q2/r2
"F" is the resulting force between the two charges. The distance between the two charges is "r." The "r" actually stands for "radius of separation" but you just need to know it is a distance. The "q1" and "q2" are values for the amount of charge in each of the particles.
Explanation:
The mathematical equation for the electric force between two charges will be ,[tex]\rm F = \frac{K q_1q_2}{r^2}[/tex]. It is a type of attractive force.
What is electric force?The electric force between the two charges is directly proportional to the product of the charge and inversely proportional to the square of the distance between them.
The electric force is found as;
[tex]\rm F = \frac{K q_1q_2}{r^2}[/tex]
q₁ is the magnitude of charge 1
q₂ is the magnitude of charge 2
k is the proportionality constant
r is the separated distance
F is the electric force
Hence, the mathematical equation for the electric force between two charges will be ,[tex]\rm F = \frac{K q_1q_2}{r^2}[/tex]
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1. Which of the following has the most potential energy?
A. a ball buried under the ground
B. a ball on the ground
C. a ball at the top of a mountain
D. a ball in a tree
Answer:
C. a ball at the top of a mountain
Explanation:
It has more potential energy because it is the highest from the ground. The higher it is, the more potential energy it has.
How is the sun energy important to the earth
are forces present even when there is no movement?
Answer:
Yes, gravitational force is everywhere. Even if you don't move or move, or wherever you are, there is gravitational force.
A guitar string 0.750 m long has a fundamental frequency of 440 hz. The guitarist wants to accent the 5th harmonic by picking at the first loop from the end of the string for this harmonic. How far from the end of the string (cm) should she pick?
Answer: a b c or d
Explanation
A 2.0 kg rock is dropped from a height of 125 m. What is the momentum of the object just before it strikes the ground (Use g=10 m/s2)?
Answer:
100Ns
Explanation:
find velocity and then plug into momentum formula momentum=(velocity)(mass)
Answer:
5,000 kg-m/s going south
Explanation:
Since you're only given mass and height, not velocity. You have to find velocity first. The equation for velocity is v=2gh. We know gravity is 10 since it's given & height is also given which is 125m. After doing the math, it's 2,500. Now that you have velocity, you can plug velocity into the formula for momentum which is p=mv. 2.0 times 2,500 = 5,000 kg-m/s going south.
HELP QUICK!!
You have two levers which are identical in all aspects except that one is an ideal lever and the other has a significant amount of friction. Using the lever with friction to do a job will result in an input force a.) less b.) same c.) greater
Answer:
unsure
Explanation:
Section 1 - Question 3
Electromagnetic energy can be used in the medical field to treat various diseases. In order for electromagnetic energy to be used for this purpose, it must be able to be targeted to very specific cells within
the body
Which of the following are characteristics of this type of electromagnetic energy
A
low frequency, short wavelength
B
low frequency, long wavelength
С
high frequency, short wavelength
CD
high frequency, long wavelength
Answer:
D
Explanation:
Waves with long wavelength and low energy are used more in medical field. High energy waves are hazardous to cells. Hence, option B is correct.
What are electromagnetic waves ?Electromagnetic waves are waves that can pass through vacuum as well as through a medium. They are associated with an electric field and magnetic field.
The electromagnetic waves which are longer in wavelength are radio waves, microwaves and IR. They have low frequency and lower in energy. Short wavelength high energy waves are UV, x-rays and gamma rays.
In medical field long wavelength waves are more used to treat disease such as cancer. Radio waves are used to treat cancer. High frequency, high energy waves are more used in diagnostic purposes. Such as in x-rays, detection of cancer cells etc.
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Do you think a circuit breaker is wired in series or parallel? Why?
Answer:
I think it's in a series
Explanation:
is this an aviation class
a lot of points, pls help. i need it done asap
How has our understanding of wave mechanics led to the implementation of tsunami warning systems in vulnerable regions? In your answer be sure to describe how scientists determine wave speed, direction, time of impact and potential wave height.
Answer:
I think it's how far out the water goes from the beach before the tsunami because before tsunami usually the water goes back way behind the tide before tsunami and that tells them everything they need I think
//su1c1de
1.
Please write a paragraph about why your bestfriend shouldn't d13
please help me i litterly have no friends so i need help with this question
Meaning of direct current
Answer:
Definition of direct current. : an electric current flowing in one direction only and substantially constant in value
Explanation:
Direct current (DC) is the one directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric current flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for this type of current was galvanic current.
Answer:
Direct current is a good current of conductor of electricity
you did 270 joules of work lifting a 135 N backpack how high did you lift the backpack?
Answer:
Distance = 2m
Explanation:
Given the following data;
Workdone = 270J
Force = 135N
To find the height (distance);
Workdone = force * distance
Substituting into the equation, we have
270 = 135 * distance
Distance = 270/135
Distance = 2m
A force of 50 N was necessary to lift a rock. A total of 150 J of work was done. How far was the rock lifted?
Answer:
[tex]\boxed {\boxed {\sf 3 \ meters}}[/tex]
Explanation:
Work is the product of force and distance.
[tex]W=F*d[/tex]
We know the force to lift the rock was 50 Newtons. The work was 150 Joules.
1 Joule is equal to 1 Newton meters. We can convert the units to make the problem simpler later. The work is also 150 Newton meters.[tex]W= 150 \ N*m \\F= 50 \ N[/tex]
Substitute the values into the formula.
[tex]150 \ N*m= 50 \ N * d[/tex]
We want to solve for distance, so we must isolate the variable. Divide both sides of the equation by 50 Newtons.
[tex]\frac{150 \ N*m}{50 \ N }=\frac{50 \ N * d}{50 \ N }[/tex]
The Newtons will cancel out.
[tex]\frac{150 \ m }{50} =d \\3 \ m =d[/tex]
The rock was lifted 3 meters.
Work out the wavelength in Meters with a frequnecy of 300 MHz and speed of 3 × 10^8 m/s.
Answer:
1 m
Explanation:
The following data were obtained from the question:
Frequency (f) = 300 MHz
Velocity (v) = 3×10⁸ m/s
Wavelength (λ) =?
Next, we shall convert 300 MHz to Hz. This can be obtained as follow:
1 MHz = 10⁶ Hz
Therefore,
300 MHz = 300 MHz × 10⁶ Hz / 1 MHz
300 MHz = 3×10⁸ Hz
Thus, 300 MHz is equivalent to 3×10⁸ Hz.
Finally, we shall determine the wavelength of the as follow:
Frequency (f) = 3×10⁸ MHz
Velocity (v) = 3×10⁸ m/s
Wavelength (λ) =?
v = λf
3×10⁸ = λ × 3×10⁸
Divide both side by 3×10⁸
λ = 3×10⁸ / 3×10⁸
λ = 1 m
Therefore, the wavelength is 1 m
write any three superstition related to zodiac
Answer:
1. Your personality traits relate to your zodiac sign.
2. Who you are compatible with in relationships depend on your zodiac sign.
3. Your strengths and weaknesses depend on your sign.
A dog is chasing a rabbit at 20 m/s. The dog trips and falls but is not hurt. 10 poi
It took the dog 2 s to come to a complete stop. What is the acceleration
of the dog?
-10 m/s/s
O 10 m/s/s
40 m/s/s
-40 m/s/s
The amount of electrons that an atom loses, shares or gains is the ________________.
A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. The car has ___ energy
Answer:
KE = 1/2mv^2
KE = 1/2(1120)(40^2)
KE = 560(1600)
KE = 896000
Let me know if this helps!
Describe how body composition is measured?
Answer:
Dual Energy X-Ray Absorptiometry (DEXA) is used to measure body composition.
Explanation:
As a standard method for body composition analysis, DEXA has high accuracy along with hydrodensitometry. Its advantage is that it can measure the body composition of bone density, body fat and muscle mass for different parts.
Select ALL the items that are influenced by jet streams.
Lesson 1.08
Select 2 correct answer(s)
Question 15 options:
atmospheric chemistry
precipitation
temperature
car travel
Answer:
precipitation and tempurature
Explanation:
i just took the quiz
Answer:
B.precipitation
C.temperature
Explanation:
hope this helps! :D
why it is easier to walk on soft sand if we have flat shoe with sharp heels
Answer:
less surface area the heels have the toe area and the thin heel as the flat shoe has the entire bottom.
Explanation:
What can radiation do to our cells if we are exposed to it too much?
Answer:
it can kill you cell and win you kill you no cell no life
Explanation:
Answer:
Our bodies are designed to deal with the low levels we're exposed to everyday due to evolution. But, too much radiation can damage tissues by changing cell structure and damaging DNA.
Explanation:
This can cause serious health problems, including cancer.
Describe the relationship between kinetic energy and speed and give an example of how changing and object speed would affect its kinetic energy
Answer:
I'm not sure
Explanation:
I have had that question to Uchida c r go crew in to go be
Question If a force of 2N is used to move a box 1 meter, how much work was done to move the box?
Answer:
I assume that the force of 2N is applied along the direction of motion and was applied for the whole 1 meter, the formula of work is this; Work = force * distance * cosθ where θ is zero degrees. Plugging in the data to the formula;
Explanation:
Work = 2N * 1m * cos 0º.
Work = 2N * 1m * 1
Work = 2Nm
Work = 2 joules