Answer:
306.4J
Explanation:
Given parameters:
Displacement = 50m
Force = 80N
Angle = 40°
Unknown:
Work done = ?
Solution:
Work done is the force applied to move a body through a certain distance.
Work done = Force x displacement cos Ф
Work done = 8 x 50 cos 40 = 306.4J
If a car has traveled 24 km in 2 hours, what is its average speed?
Answer:
12km per hour
Explanation:
The formula is distance/time.
24km/2 hours = 12km/1 hour
Explanation:
average speed = distance / time
= 24km/ 2 hr
= 12 km/ hr
Hope this will be helpful to you .
If a current of 2A flows through a bulb for 5 minutes, how much charge has passed through the
bulb?
Answer:
600 C
Explanation:
Given
Current, I = 2 A
time, t = 5 min = 300s
Recall that charge is given as
Charge, Q
= It
= 2 x 300
= 600 C
the angle between incident ray and reflected ray is 130.what is the value of angle of incidence
Answer:
65
Explanation:
as i = r , so i + i = 130
so , i = 130/2 =65
Answer:
please find attached file
Explanation:
Why can't you see individual atoms with special tools?
Answer:
Atoms are so much smaller than the wavelength of visible light that the two don't really interact.
Explanation:
To put it another way, atoms are invisible to light itself.
Visible light has a wavelength that ranges from 400 to 700 nm. Atoms, in contrast, typically have a diameter of between 0.1 and 0.3 nm. The size difference is greater than a thousand times, even with straightforward calculations.
What are the properties of atoms?Over 500,000 times of magnification are possible using an electron microscope, which is sufficient to observe a great deal of information inside cells.
The electron microscope comes in a variety of varieties. Atoms and nanoparticles can be observed with the use of a transmission electron microscope.
In a chemical reaction, atoms cannot be formed or destroyed, since they are indivisible units. The mass and chemical characteristics of each atom of a specific element are the same.
Therefore, the atom's structure is invisible to visible light.
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Sometimes you wish you could go back in time and fix your mistakes but you can’t you can say sorry but it’s never enough what more do they want what is a true friend it’s someone who pulls you away when something isn’t right someone who cares about you and will go out of there way to help you but I guess that dosent mattter bc apparently I’m a fake friend goodbye forever
Answer:
very true
Explanation:
u ok?
(their* not there)
But- WHOAH- You don't need to say "Goodbye forever" you could find new friends who love and support you. People say things, they do things, but they're still human, just like you are. Mistakes will be made. You just gotta fight the bad and look for a brighter future. Not everyone or everything is gonna be sunshine and rainbows. It's gonna be bumpy and rough, you just gotta work out the kinks of it and move on.
Calculate the force applied (in newtons) if a pressure of 7Pa is acting on an area of 21m?.
Answer:
147N
Explanation:
pressure = 7pa
area= 21m
force=?
now,
p = f/a
7 = f/21
f = 21×7
therefore, f = 147N.
What two factors affect the strength of a magnetic field
Answer:
Factors Affecting the Strength of the Magnetic Field of an Electromagnet: Factors that affect the strength of electromagnets are the nature of the core material, strength of the current passing through the core, the number of turns of wire on the core and the shape and size of the core.
Explanation:
I HOPE I HELPED :)
Why do you often freeze after a shower?
Help mee
When a warm object is heated up, the thermal radiation it emits changes. Give two ways in which the thermal radiation changes
Answer:
*The increase in thermal energy the maximum emission of radiation changes according to Wien's law
*The increase in thermal energy he intensity of the energy increases significantly, proportional to the fourth power of the temperature
Explanation:
When bodies heat up, the vibrations of their molecules and atoms increase, due to the energy, therefore the internal energy (Temperature) of the body also increases.
The increase in thermal energy relaxes in an increase in body temperature, when this happens the maximum emission of radiation changes according to Wien's law that gives a shift towards the visible as the temperature increases.
Furthermore, the intensity of the energy increases significantly, in a curve described by the Planck expression.
These increases are proportional to the fourth power of the temperature
P = σ A e T⁴
How efficent is geothermal at producing eletricity?
Answer:
The conversion efficiency of geothermal power developments is generally lower than that of conventional thermal power plants. ... The highest reported conversion efficiency is approximately 21% at the Darajat vapour-dominated system, with a worldwide efficiency average of around 12%.
BRAINLIEST WILL BE GIVEN!!!!! After communicating the information you requested above, he pushes the sled a total distance of 50 m and exerts a horizontal force of 800 N. During the sled push he pushes the sled 25 m, turns around and pushes it 25 m back to where he started. He argues that the work done is 40000 J, but you say the total work is actually 0 J. Why are you correct and he is wrong?
Answer:
W=F*D
40,000=800*50
With this you are wrong and he is right because work is not like displacement where if you go 10 ft to the right then 10 ft to the left you have traveled gone 0 ft from original spot. because your distance was 50 m and you exerted 800 N you multiply that together and come out with 40,000 so HE IS RIGHT YOU ARE WRONG.
PLZ mark as brainliest
SCIENCE PLEASE HELPP!!!!
Use evidence and reasoning to support the claim that a stronger force changes velocity more than a weaker force.
Write in own words. And simply bc my teacher knows I'm an idiot :)
Answer:
A stronger force changes increases velocity more due to increased acceleration on the object if the mass is constant as compared to a weaker force.
Explanation:
Force affects how objects behave in terms of motion, direction, shape etc. When an object is in a state of rest, then force is applied, the object starts to move is a particular direction. Increase in the force applied will make the object to speed up which is to say the velocity will increase.
For example:
When a ball is kicked with a player with a force of 10 N the velocity of the ball is recorded to be 3 m/s. When the player is replaced with a kid the force on the ball is 2 N and its velocity is recorded to be 0.3 m/s.
Reasoning
Increased in force applied on an object increases its acceleration resulting to a higher velocity of the object.
F= m * a --------if mass is constant , increased force will increase acceleration and speed up the object.
PLS ANSWER ASAP
When electrons are transferred between two atoms, a covalent bond is formed.
Please select the best answer from the choices provided
T
F
Explain how a bathroom scale is like a biofeedback machine.
Answer:
Explanation:
Which type of energy transfer is responsible for the movement of magma in Earth's interior? A)conduction B)convection C)radiation D)melting
Answer:
B. Convection.
Explanation:
Convection is an energy transfer process which typically involves the transfer of heat as a result of the movement of mass. Convection is generally considered to be a more effective and efficient means of heat transport in the Earth when compared to conduction. The movement of tectonic plates is caused by the convection current because the heat gains pressure underneath the crust.
Hence, the type of energy transfer which is responsible for the movement of magma in Earth's interior is convection.
Additionally, subduction zone is a zone which represents the collision between the two (2) tectonic plates of planet earth. Subduction zone occurs in countries such as Japan, Canada, Indonesia, Russia, Alaska, and around the Pacific Ocean.
Generally, subduction zones are responsible for high intensity earthquakes, volcanoes and tsunamis around the world.
What to do?
Before an earthquake
_______________.
During an earthquake
_______________.
After an earthquake
_______________.
PLEASE ILL GIVE YOU BRAINLIEST
Which word identifies this part of a eukaryotic cell?
A. vesicles
B. chromatin
C. cytoplasm
D. nucleolus
Answer:
c
Explanation:
Answer:
my answer has to be more than 20 characters long
Explanation:
C.cytoplasm
Please answer will mark brainlyist
Answer:
B) golf
Explanation:
i think
a school bus has stopped to allow children to get off the bus which graph shows the motion of the bus?
Answer: what is it in
Explanation:
What data will you collect in order to calculate the balloon car’s velocity?
Answer:
To calculate speed, all you have to do is divide distance by time.
Explanation:
Velocity is just speed in a particular direction. For example, if in 3 hours you ran 6 kilometers west, your velocity was 6 km/3 hours = 2 km/hour west.
Unequal sharing of electrons occurs when one atom’s protons have a greater pull on the shared electrons.
Please select the best answer from the choices provided
T
F
Answer:
this is the answer
. false
Abdul works at the planetarium where he is responsible for creating a show on stars. His show is entitled "A Star is Bom," and it will explain the
forces that create a star.
Abdul is creating a timeline of a star's life including its beginning, middle, and end. Abdul found a picture to include of the region around a star
before its formation begins. What does it look like?
Answer:
dust cloud
Explanation:
Stars are formed from the accumulation of the dust as well gases in the solar system. The dust and the gases collapses due to the the gravity forces and the stars are formed.
They are formed within the clouds of the dust and gases and are scattered in the galaxies. The stars are formed in a million of years from the dust clouds.
In the context, Abdul have a picture of a dust cloud which looks smoky and dusty which is the initial stage of the stars formation due to the gravity. It is the region of the star that looks like a cloud of dust before the formation of the star.
phosphorus-32 undergoes beta decay. which particle correctly completes the equation to show that the numbers of nucleons on the two sides of the equation are equal?
Answer:A
Explanation:
A P E X
Write down the formula to work out the density of an object using its mass and volume.
Answer:
density=mass/volume.
Which chemical reaction is the fastest?
A. Bread turns brown in the toaster.
B. Yogurt grows mold in the refrigerator.
C. Apple juice turns into vinegar.
D. Potatoes change flavor as they are boiled.
Answer:
Bread turns brown in the toaster.
plz mark brainliest!! plzzz
What is the easiest way to add energy to matter? Heating it Cooling it Decreasing pressure Decreasing temperature
Answer:heating it
Explanation:
Answer:
Heating it
Explanation:
i took the k12 test and got a A
Question 1
1 pts
T
A
Which of the following best explains why fossil fuel supplies are limited?
1
People are not allowed to use large amounts of fossil fuels.
Fossil fuels exist in very large quantities but they are difficult for scientists to locate.
Fossil fuels formed over millions of years and they are being used more quickly than they can be
replaced.
BOnly small amounts of fossil fuels even formed and early humans used most of the available
supply
Answer:
Fossil fuels formed over millions of years and they are being used more quickly than they can be replaced.
Explanation:
The best reason why he use of fossil fuels should be limited is that fossil fuels formed over millions of years and they are being used more quickly than they can be replaced.
Fossil fuels contains a very rich energy which is trapped within the carbon atoms and are obtained during combustion.
It takes several geologic years for the fuels to form. On the other hand, our current rate of consumption of fossil fuels cannot be sustained because, consumption cannot be matched with the formation.
“For every action, there is an equal and opposite reaction”
which of Newton’s laws of motion is defined?
Im horrible at memorizing the laws, help :(
How does temperature affect the volume and pressure of a gas?
Answer:
as temperature increases, the pressure of gas also increases as well as volume
Explanation:
Athlete mesert defar runs at 10m/s. how long will it take her to go 1 minute
Answer:
600 metres
Explanation:
1 minute = 60 seconds
1 second = 10 metres
60 seconds = 60 x 10 = 600
Athlete Mesert Defar runs 600 m in 1 minute. The speed of an object is equal to the distance traveled divided by time elapsed.
What is the relationship between Speed and Distance?The speed of an object is equal to the distance traveled divided by time elapsed.
[tex]s = \dfrac dt \rm \ \ \ or[/tex]
[tex]d = s \times t[/tex]
Where,
[tex]d[/tex] - distance
[tex]t[/tex] - times = 1 minute = 60 sec
[tex]s[/tex] - speed = 10 m /s
Put the values in the formula,
[tex]d = 10 \times 60 \\\\ d = 600 \rm \ m[/tex]
Therefore, Athlete Mesert Defar runs 600 m in 1 minute.
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