A force of 20 newtons
is used to much a box
a distance of 2
meters. How much
work was done?
Answer:
Workdone = 40 Nm
Explanation:
Force = 20 Newton
Distance = 2 meters
To find the work done;
Mathematically, work done is given by the formula;
Workdone = force * distance
Workdone = 20 * 2
Substituting into the formula, we have;
Workdone = 40 Nm
The speed of a car changes from 15 m/s to 55 m/s in 10 sec. find the Acceleration
Answer:
acceleration=55-15/10
=40/10
=4m/s^2
Explanation:
the acceleration is 4 m/s
predict the date of the next full moon.
please help me quickly i will give you branliest! ๑>ᴗ<๑
Answer:
The 19th
Explanation:
going based off of the calandar, you just start from the 4 at the bottom and then just count up as you go through it agains starting back at the top.
Answer: the 19th
Explanation:
count the number of days it takes you to get from full moon (20th) to no moon (4th)
it takes 15 days to get to the no moon phase
so theoretically if we add 15 days to the 4th when there was no moon, we should find the day when there is a full moon
4 + 15 = 19
so the full moon should happen on the 19th :))
What can waves be transmitted by? How do you know?
Answer:
i don’t know what kind of waves you mean but if you’re talking about sound waves...
Explanation:
“Sound waves are transmitted through solids, liquids, and gases. Light waves are transmitted through transparent materials (may be clear or colored material such as filters) that allow most of the light that strikes them to pass through them. Only a small amount of light is reflected or absorbed.”
A set of charged plates have an
area of 8.22*10^-4 m^2 and
separation 2.42*10^-5 m. The
plates are charged with
5.24*10^-8 C. What is the
potential difference V between
the plates?
(Unit = V)
pls hurry <3
Answer:
175
Explanation:
its for Acellus
The potential difference is V=1.743*10^-7
The voltage is generally referred to as the electric potential difference and it can be measured using a voltmeter. The electrical potential difference between the two plates is expressed as q=CV.
CALCULATION
we know,
q=CV
q={EA/d}*V
here q= 5.24*10^-8C
A=8.22*10^-5m^2
d=2.42*10^-8m
therefore , C={( 8.85*10^-12)*(8.22*10^-5)}/(2.42*10^-8)
C=3.006*10^-1
q=CV
q/C=V
V=1.743*10^-7
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14. Do loud sounds travel faster than soft sounds? Why or why not?
Answer:
The rarefaction particles are further apart when the sound is soft. Do loud sounds travel faster than soft sounds? No. Both travel at the same speed.
A man rides up in an elevator at 12 m. He gains 6500 J of gravitational potential energy. what is the man's mass?
Answer:
We know that potential energy of a body;
= mass(m)× gravitational acceleration(g) × height(h)
Lets find out the mass of the body
P.E. = mgh
=> 6500J = mass × 9.8m/s^2 × 12m
=>6500J = mass × ( 9.8 × 12 ) × ( m/s^2 × m)
=> 6500 Nm = m × 117.6 × m^2 / s^2
=> 6500/117.6 Ns^2/m = mass [°.° Ns^2/m = kg]
=> 55.272 Kg = mass
Therefore the mass of the body = 55.272 kg ~ 60 kg (Ans)
Hope it helps you
free fall is possible on lunar but not on earth surface.Why?
Answer:
The earth has more gravity so that means if you jump out of a plane without a parachute u will die. But the moon has less gravity so u will not die when hit ground. But someone can probally explain it better than me.
More gravity equals more speed in some cases like falling
A 12 kg
mass is lifted to a height of 2 m. What is its potential energy
at this position?
Answer:
Explanation:
Potential energy is the energy stored within an object, due to the object's position, arrangement or state
Answer:
240joules
Explanation:
P:E = MGH
mass 12kg
g is constant as 10m/s²
h is 2m
therefore, 12*10*2 =240joules
Which of these does not represent a direct transfer of carbon
1.Air to trees
2.Giraffe to tree
3.Tree to giraffe
Answer:
The correct answer is - 2. Giraffe to trees.
Explanation:
In the carbon cycle, the movement of carbon is represented how it moves from one sphere to other and how it transfer among the different organism. The carbon moves from air to the trees in the form of carbon dioxide that is used by trees for the production of glucose by the process of photosynthesis through stomata.
The movement of the carbon among trees to different herbivores including giraffe is transferred by the eating of the leaves or fruits of the tree that carries glucose or starch. The transfer of carbon through giraffe does not take place directly but takes the release of carbon dioxide by the process of cellular respiration to the atmosphere.
Which of the following actions may help to prevent a rear-end collision?
rolling forward if there is room
pumping the brake to make the brake lights flash
rolling forward if the front zone is clear
all of the above
Que consecuencias producen en el suelo y el ambiente la cantidad de basura que se arroja en las calles?
Answer:
Aumenta la contaminación y las enfermedades.
Explicación:
El aumento de la contaminación en el medio ambiente y la propagación de enfermedades se produce si la gran cantidad de basura se tira a las calles porque la basura es el producto de desecho en el que crecen patógenos como bacterias y hongos y sabemos que las bacterias y los hongos son la principal causa de infecciones en los seres humanos. , plantas y otros animales, por eso podemos decir que tirar basura en las calles contamina tanto el medio ambiente como el suelo y causa enfermedades.
how can a river be used to produce electricity?
Answer:
Scientists at IIT Roorkee are testing a floating device that can generate electricity from flowing surface water of rivers and streams, paving the way for an alternative source of renewable energy.
Explanation:
hope it helps my dear friend.
Tara kain tayo gaize ulam natin sardinas tara kain gaize?
A.heat
B.sun
C.earth
D.warm
Please answer it please
Answer:
Heat.Explanation:
Pyramids were built for religious purposes. The Egyptians were one of the first civilizations to believe in an afterlife. They believed that a second self called the ka lived within every human being. When the physical body expired, the ka enjoyed eternal life
DESPERATE WILL GIVE BRAINLIST AND THANKS
Ethanol and biodiesel are also _____________________ fuels than pure gasoline and diesel fuel.
Question 3 options:
difficult to find
smog-releasing
cleaner-burning
Ethanol and biodoesel are also cleaner-burning fuels than pure gasoline and diesel fuel.
I hope I helped! :)
Match the following. Match the items in the left column to the items in the right column.
1. March 21
7
North Pole
2. Arctic
vernal equinox
3. December 21
longitude
4. meridians
lowest point on earth
5. September 23
latitude
6. Greenwich, England
South Pole
7. Antarctic
winter solstice
8. Marianas Trench
autumnal equinox
9. parallels
Prime Meridian
10. International Date Line
180th meridian
Answer:
March 21 = Vernal Equinox
Artic = North Pole
December 21 = Winter Solstice
Meridians = Longitude
September 23 = Autumnal Equinox
Greenwich, England = Prime Meridian
Antarctic = South Pole
Marianas Trench = Lowest point on earth
Parallels = Latitude
International Date Line = 180th Meridian
Explanation:
Which is an element? A.) Ca B.) NaCI C.) AgNO3 D.) CO
Answer:
CO
Explanation:
Cobalt is a chemical element with symbol Co and atomic number 27
Please help me thanks please please
I will give you brainlest
Answer:
We know that F=ma
the force required depends on acceleration as well as the mass.
if a person has bag means the total mass is of course large
so force is also large
then it becomes difficult
Investigating arson can be a very complicated and complex job, as you learned in the unit! It is also generally a time sensitive matter. Forensic scientists who investigate arson must not only act quickly, but also methodically.
In order to practice how you would respond during an arson investigation, you will be creating a ‘game plan’ or ‘fire investigation timeline’ for what you would do upon arriving at the scene of a fire. Using what you learned in the unit as well as any necessary online research, you will articulate each step that would take place during your investigation. Be sure to number your steps and keep in mind any unexpected situations that might occur.
For example: “First, I would want to find the fire’s origin and look for signs of accelerant use. If I was able to locate the origin, I would do my best to preserve the area. If not, …”
Your ‘timeline’ should be detailed but it does not need to be as extensive as a research paper or essay. You can format your timeline however you like – as an actual timeline, a bulleted list, or short paragraphs as long as you include a clear format like first, second, third, etc. Be sure to include at least six steps.
You can create your ‘timeline’ in a word processing program or a slide presentation. You will be graded on the accuracy of your timeline as well as mechanics and grammar. For more details, see the rubric below.
The Plot Explodes (ongoing activity)
An explosion has occurred in a house down the street from Dr. Fisher’s apartment! Fortunately, the fire was controlled before it could spread to the rest of the block. No one was in the house when the blast occurred. All personal possessions in the house, including a computer and several filing cabinets, have been destroyed.
Property records show that Dr. Fisher’s former patient, Bill, bought the house a year ago. He was still Dr. Fisher’s patient at that time. Apparently, their relationship was strained. Bill had tried to sue Dr. Fisher for malpractice, without success.
When investigators searched the scene, they found bomb fragments with homemade electronics. They traced the electronics to a nearby store where Bill is a customer. They also found a metal cabinet at the scene that survived the blast. Inside the cabinet were several boxes of .38 caliber brass bullets.
So far, investigators have been unable to locate Bill for questioning.
Who do you think bombed Bill’s house, and why? (one to two sentences)
What other types of explosion or fire evidence might you look for within the blast radius? (two to three sentences)
Does this incident change your theory on Dr. Fisher’s murder? Explain. (three to five sentences)
Answer:
First, I would want to find what started the fire and why that's what caused it.
Second, I would take pictures of the area where the fire started if found.
Third, I would interview the witnesses.
Fourth, I would document the scene and write down everything that I see and what the people seen/heard happen.
Fifth, They need to do a full scene investigation.
Sixth, They need to do a follow up investigation.
Who do you think bombed Bill’s house, and why? (one to two sentences) I think Bill bombed his own house because he did not want to be caught. He most likely bombed his house with all his belongings so that he couldn't be traced.
What other types of explosion or fire evidence might you look for within the blast radius? (two to three sentences) Within the blast radius I would search for chemical residue. I would try to find Bill as soon as possible to match the chemical residue on his clothes if there is any.
Does this incident change your theory on Dr. Fisher’s murder? Explain. (three to five sentences) As sad as it is I believe that Dr. Fisher was murdered by his own patient Bill since they had a very hostile relationship. The incident of Bill’s house bombing doesn’t change my theory on Dr. Fisher’s murder, in fact, it further consolidates my theory of Bill being the murderer since Bill wanted to get rid of the evidence so that’s why he bombed his own house.
Explanation:
what is the frequency of the electromagnetic wave if the period is 1.54x10-15s
[tex]10 { - }^{15} [/tex]
answer✿࿐
I was not able to write it here
so I did it somewhere else and attached the picture
i hope it helps
have a nice day
#Captainpower
You need a clear and steady blood
flow so that your vital organs can get
the
they need
A. neurons
B. oxygen
C. rest
Answer:
B. oxygen
Explanation:
Answer:
it's oxygen lolllllllllllll they kinda need it
Explanation:
You walk 200m south, then 50m east. What is your displacement?
A crate (m = 100 kg) is pulled across a floor to the right with a rope horizontal to the floor. The tension in the rope is 400 N. The coefficient of kinetic friction is 0.4. What is the acceleration? If started from rest, what was the velocity after 3 seconds?
Answer:
Explanation:
Force of friction acting on the crate = μ mg
= .4 x 100 x 9.8 = 392 N
Net force acting on the crate = 400 -392 N = 8 N .
acceleration = net force / mass
= 8 N / 100 kg
= .08 m /s²
velocity after 3 s.
v = u + at
= 0 + .08 x 3
= 0.24 m/s .
Question 8
Swimming in an open body of water (like a river, lake, or ocean) is different from swimming in a
Answer:
pool
Explanation:
I think
What creates a magnetic field?
A. moving electric charges
B. charged particles at rest
C. moving magnets
Answer:
moving electric charges
when you look at your speedometer and it reads 60 mph this is your instantaneous speed
true
false
true true tire true tire ture
please mark brainlist
The given statement is true when you look at your speedometer and it reads 60 mph this is your instantaneous speed.
What is Speed ?In everyday language, most people use the terms speed and velocity interchangeably. In physics, however, they do not have the same meaning and are distinct concepts. One major difference is that speed has no direction; that is, speed is a scalar.
We can calculate the average speed by finding the total distance traveled divided by the elapsed time:
Average speed=Total distance=Elapsed time.
Average speed is not necessarily the same as the magnitude of the average velocity, which is found by dividing the magnitude of the total displacement by the elapsed time. For example, if a trip starts and ends at the same location, the total displacement is zero, and therefore the average velocity is zero. The average speed, however, is not zero, because the total distance traveled is greater than zero. If we take a road trip of 300 km and need to be at our destination at a certain time, then we would be interested in our average speed.
However, we can calculate the instantaneous speed from the magnitude of the instantaneous velocity:
Instantaneous speed
=|v(t)|.
If a particle is moving along the x-axis at +7.0 m/s and another particle is moving along the same axis at −7.0 m/s, they have different velocities, but both have the same speed of 7.0 m/s. Some typical speeds are shown in the following table.
We have now seen how to calculate the average velocity between two positions. However, since objects in the real world move continuously through space and time, we would like to find the velocity of an object at any single point. We can find the velocity of the object anywhere along its path by using some fundamental principles of calculus. This section gives us better insight into the physics of motion and will be useful in later chapters.
Learn more about Speed
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What is the frequency of a wave moving at 1782 m/s if its wavelength is 30.2 m?
Answer:
Explanation:
Wavelength = Velocity / Frequency
= 1782/30.2
= 59 metre.
Un tubo cilindrico hueco de cobre mide 3 m de longitud tienen un diametro exterior de 4cm y un diametro interior de 2 cm¿cuanto pesa?
Answer:
W = 9.93 10² N
Explanation:
To solve this exercise we must use the concept of density
ρ = m / V
the tabulated density of copper is rho = 8966 kg / m³
let's find the volume of the cylindrical tube
V = A L
V = π (R_ext ² - R_int ²) L
let's calculate
V = π (4² - 2²) 10⁻⁴ 3
V = 1.13 10⁻² m³
m = ρ V
m = 8966 1.13 10⁻²
m = 1.01 10² kg
the weight of the tube
W = mg
W = 1.01 10² 9.8
W = 9.93 10² N
If a 50 kg person is running at a rate of 2 m/s, the person’s momentum is
_____________ kg • m/s.
In which stars will you likely find fusion of heaveir elements such as helium and oxygen
