Answer:
C. 100 J
Explanation:
If the 60 you wrote is the degree (60°)
Work done = forcexcos x distance
W= 100x cos 60 x2
W= 100 J
Answer:
100 J
Explanation:
Work done is the product of force and distance. The distance here is easy; it's just 2 m because it was pulled horizontally. The force, on the other hand, requires some more work, no puns intended!
We know the applied force is at an angle. Since work is parallel to the distance, the force used to calculate work must be parallel to the distance as well. This means we must use the horizontal component of the force. This, consequently, calls for the horizontal component of the angle.
Here, that horizontal component is the cosine of theta, cos θ, because the horizontal component must be adjacent to the angle. We know the angle in this case; θ is 60°. So, to find the component of the force parallel to the floor, we must multiply the total force by cos θ.
Here, θ = 60°, and the total force is 100 N. Therefore, the horizontal force equals 100 N × cos 60°. As for cos 60°, its value is 0.5. This means the horizontal force equals 100 N × cos 60° = 50 N.
From here, the work is that force, those 50 N, times the distance the box was pulled, 2 m. Therefore, work equals 50 N × 2 m = 50 N × m = 50 J.
In summary, the total work done is 50 J.
I hope you understand my explanation! Please have a great day!
Which part of the drum vibrates when it produces sound?
Explanation:
For example, when a drum is struck, the flexible skin (sometimes called a membrane) of the drum vibrates. The compression and expansion of the air on either side of the vibrating membrane produces differences in air pressure. The pressure differences generate a sound wave that propagates outward from the drum surface.
What are the primary colors? What are the secondary colors?
Color Basics
Three Primary Colors (Ps): Red, Yellow, Blue.
Three Secondary Colors (S'): Orange, Green, Violet
Answer:
Color Basics
Three Primary Colors (Ps): Red, Yellow, Blue.
Three Secondary Colors (S'): Orange, Green, Violet.
Six Tertiary Colors (Ts): Red-Orange, Yellow-Orange, Yellow-Green, Blue-Green, Blue-Violet, Red-Violet, which are formed by mixing a primary with a secondary.
Explanation:
i added the tertiary colors just in case you need it hoped this helped
Why is it very dangerous
for the driver and
passengers if any bubbles of gas get into
the brake fluid? Even worse what would go wrong if the break fluid leaked out of its pipes?
Answer:
If it leaks....
If there is a brake fluid leak and air gets mixed with the fluid in the brake lines, then the fluid will not be able to flow correctly. As a result, when you press your foot down on the brake pedal, it will feel squishy or spongy. In other words, the brake pedal will feel very soft.
If air bubbles get into....
Air is the enemy in a hydraulic system because it reduces pressure and essentially makes the process less effective. When air gets into the brake lines, your brake system suffers. Symptoms that can indicate you have air in your brake lines include the following: Brake pedal feels spongy when you press down
Hope it helps!!!!
Accurate forecasts require careful study of the location, size, movement, and characteristics of large _____.
fronts
air masses
isobars
precipitation
Answer: B air masses
SCIENCE
What does the nucleus of the cell control?
A. Life functions
B. Cell transport
C. Waste excretion
D. Energy production
Answer:
I believe A would be the best answer
Explanation:
Cell transport means things entering and leaving the cell, this would be controlled by the cell membrane
Waste excretion is controlled by the vacuole
Energy production is the mitochondria (the mitochondria is the power house of the cell)
Life functions include cellular reproduction and the nucleus contains the genetic information to do this
Answer:
a
Explanation:
All materials are made up of elements. Which of the following best describes elements? A. Mixtures combine in several different ways to make many kinds of elements. B. Elements are unable to combine in order to make different compounds. Elements combine in several different ways to make many kinds of compounds. > D. Compounds combine in several different ways to make a limited number of elements,
Answer:
a.
Explanation:
Answer:
I am pretty sure it is C!
Explanation:
According to www.open.edu,
Elements are substances that are made from one type of atom.
Compounds are substances made from atoms of different elements joined by chemical bonds.
A mixture is made by simply mixing together elements and compounds.
Atoms are the basic building blocks.
i think A is incorrect because, while the statement may be correct, it is talking about Mixtures, not elements themselves!
B is incorrect because elements ARE able to combine to form compounds!
D is incorrect because ELEMENTS combine to create compounds, i am pretty sure compounds don't combine to create elements.
What are 3 characteristics of creative or "Literary" Nonfiction
Answer:
Creative nonfiction should (1) include accurate and well-researched information, (2) hold the interest of the reader, and (3) potentially blur the realms of fact and fiction in a pleasing, literary style (while remaining grounded in fact).
I hope it's helpful!
_____ are both ways of preserving current energy resources.
1.Increasing efficiency and energy conservation
2.Removing insulation and using incandescent bulbs
3.Energy conservation and removing insulation
4.Using incandescent bulbs and increasing efficiency
Answer:
4
Explanation:
I think if not. I am sorry
Answer: 1
Explanation: sorry im late
At what point on a roller coaster is the kinetic energy increasing?
1.At the bottom of the hill.
2.As it is going down the hill.
3.As it is climbing the hill.
4.At the top of the hill.
the wrong answer to just get points = banned
I will give brainliest
Answer:
2
Explanation:
When forces of 5 N and 7 N respectively act on an object. When will the resultant of the two vectors be at a maxium
Answer:
F = 12 N
Explanation:
Given that,
Force of 5 N and 7 N respectively act on an object.
We need to find the resultant of the two vectors be at a maximum.
Force will be maximum when two forces acts in same direction. It means we can simply add them i.e.
F = 5 N + 7 N
F = 12 N
Hence, the resultant force is 12N.
FREE BRAINLIEST! if you can answer this correctly ill give you brainliest and answer some of the questions you have posted :) thank you very much!!! (22pts)
Answer:
Its..... friction and normal force, have a good day AheadAnswer:
yo mama
Explanation:
PART ONE In a 52 s interval, 381 hailstones strike a glass window of area 1.124 m^2at an angle 43◦to the window surface. Each hailstone has a mass of 5 g and speed of 6 m/s. If the collisions are elastic, find the average force on the window.
Answer in units of N.
PART TWO Find the pressure on the window. Answer in units of N/m^2.
Answer:
Each hailstone has a mass of 7 g and a speed of 4.5 m /s. If the collisions are elastic, what is the average force on the window? ... strike a glass window of an area of 0.954 m2 at an angle of 25◦ to the window surface.
Explanation:
Thats all i hope this helps lol
Samples of different materials, A and B, have the same mass, but the sample of A is higher in density. Which statement could explain why this is so?
A. The particles that make up material A have more mass than the particles that make up material B
B. The particles that make up material B have more mass than the particles that make up material A.
C. The particles that make up material B are more closely packed together than the particles that make up material A.
D. The sample of material A has greater volume than the sample of material B.
It's A
Answer: B. The particles that make up material B are more closely packed together than apart because that make up material A!!!
Answer:
C. The particles that make up material B are more closely packed together than the particles that make up material
Explanation:
I took the test, good luck! :)
PLEASE HELP I HAVE BEEN STUCK ON THIS FOR A WHILE.
A long platform is holding your physics teacher in the air above some hungry alligators. Your physics teacher has a mass of 75 kg and is located 2 m from one end. The 10.0 m platform has a mass of 10.0 kg, and its center of gravity is located 4.0 m from the same end. The platform is being held up by two students, one at either end.
a. What force is required by each student to hold the platform up?
Answer:
See Below.
Explanation:
I can't transpose the diagram onto Brainly. I'll do my best to describe what is going on.
Draw a horizontal line one inch from the each border of the page.To show what each of A and B are supporting, use an up arrow. Label the Ends A and B. B is on the right side.Put the physics teacher about 1.5 inches from B. His force goes down. Label it as 75 * 9.8 NewtonsPut the platform mass about 2.5 inches from BLabel it as 10 * 9.8 NewtonsB is the balance pointNow put in the distances. The lines are horizontalStudent A: 10 metersCenter of mass: 4 meters to BMass of Physics: 2 meters.Now you are ready to develop the equation
Clockwise
There is only 1 force where B is the Balance point that is going clockwise
10 * Force A
The AntiClockwise Moments
Platform: 4*10kg * 9.8 = 392 N m
Physics T: 2 * 75 * 9.8 = 1470 N m
So the Anti Clockwise moments = the clockwise moments.
10 * Force A = 392 NM + 1470NM Divide by 10. Remember that is in meters
Force A = 1862 N M / 10 10 M = 186 N
Does that make some sort of sense? It should Student A is the furthest distance from where all the action is at B. Therefore he is carrying the lightest weight.
Now what is the total force?
(75 + 10 ) * 9.8 = 85 * 9.8 = 833
This is one of those strange things that won't make sense until it does. Read the next sentence carefully. B is carrying most of the weight. Remember Newtons measure weight.
Support of A = 186 N
Support of B = x
Total of A+B = 933
186 + x = 833
x = 933 - 186
x = 647
So the forces are
A supports 186
B supports 647
Which is a device that stores electric charge by separating positive and negative charges?
O a conductor
O a dielectric
O a resistor
O a capacitor
Answer:
The last one, a capacitor
Explanation:
Right on edge.
The s.I unit of R so that the equation velocity= R × density S dimensionally correct R is a constant
Answer:
R = m⁴/kg . s
Explanation:
In this case, the best way to solve this is working with the units in the expression.
The units of velocity (V) are m/s
The units of density (d) are kg/m³
And R is a constant
If the expression is:
V = R * d
Replacing the units and solving for R we have
m/s = kg/m³ * R
m * m³ / s = kg * R
R = m * m³ / kg . s
R = m⁴ / kg . sThis should be the units of R
Hope this helps
Is this right? Please help me
Part A
The simulation shows radio waves emitted by an electron that is in a radio transmitter. The window in
the bottom-right corner shows the wave emitted by the transmitter. Move the electron up and down, and
observe the wave it emits in the window. Change the speed of the motion of the electron. What
relationship do you notice between speed and wavelength?
Answer:
The wavelength decreases as the electron speeds up. The wavelength increases as the electron slows down.
Explanation:
Based on the table,which car had the slowest speed??
Answer:
car 4 i think
Explanation:
Answer:
car 3
Explanation:
car 1 - fastest - .5 seconds per meter
car 2- 2nd fastest - 1 second per meter
car 4 - 3rd fastest - 1.25 seconds per meter
car 3 - slowest - 1.5 seconds per meter
Sort the balloons based on the kinds of charges they carry.
first one is negative
second is none
third is posotive
last one is negative
left to right order
Answer:
Explanation:
thats the answer
A reaction that results in the combining of smaller atomic nuclei is ____.
a.
chemical
c.
fusion
b.
fission
d.
ionization
The correct Answer:
B. Fission
What is the critical angle for a ray trying to pass from glass (n = 1.52) into water (n = 1.33)? (Water n = 1.33, Air n = 1.00) (Unit = deg)
Answer:
59.52
Explanation:
59.5 in sigfigs
got it right on Acellus
Answer:
61.05
Explanation:
correct on acellus
What process must occur to create a supersaturated solution? The solution needs to be filtered. The solution needs to be heated. The solution needs to be diluted.
Answer
Second Option: The solution needs to be heated.
Explanation:
Its like being in the wild and you find a creek with water flowing through say it ain't clean it needs to be boiled for it to be drinking water why it must be heated so the heat can boil and burn all the bacteriea and harmful things in the water to make it clean for you to drink.
Answer:
The solution needs to be heated.
Explanation:
How do the lungs help maintain the body's pH
balance?
Answer:by removing carbon dioxide from the body
Explanation:
I just got it right
50 POINTS!! BRAINLEST
Answer:2 one
Explanation:
Answer:
A webpage that is green has a title in red font to create emphasis. What color scheme is this?A webpage that is green has a title in red font to create emphasis. What color scheme is this?A webpage that is green has a title in red font to create emphasis. What color scheme is this?:
Which of the following is an example of the transformation of gravitational potential energy into motion energy (kinetic energy
A tire rolling along a level floor
A ball going up after being tossed into the air
gley
ve
A drop of water falling from a faucet into a sink
None of these because gravitational potential energy cannot be transformed into motion energy
Answer:
A drop of water falling from a faucet into a sink
4. What is the consequence of atoms being a singular closed system?
Atoms of a certain element contain a fixed amount of energy.
Atoms of a certain element can't be altered by outside forces.
Atoms don't interact with each other in any way.
Atoms decompose slowly over time as they lose energy.
Answer:
*Atomos of a certain element contain a fixed amount of energy.
Explanation:
The atoms are said to be closed systems because the number of protons, neutrons and electrons is fixed, so these elements each have an energy given by the electrical interaction with the other elements.
Consequently, the correct answer is: Atomos of a certain element contain a fixed amount of energy.
Answer:
Atoms of a certain element contain a fixed amount of energy.
Explanation:
Blood vessels that have valves in them:
Answer:
veins
Explanation:
veins are the blood vessels which have valves to prevent backwardflow of blood .
plz mark my answer as brainlist plzzzz vote me also hope this will be helpful to you
Which landform is most likely formed from the destructive and constructive processes from wind forces?
A. Canyon
B.dunes
C. Mountain
D. Valley
Answer:
B.dunes
Explanation:
sand dunes are created by wind
The landform which is formed from the destructive and constructive processes of wind forces is dunes. Hence, option B is correct.
What is a landform?An anthropogenic or natural land feature on the solid surface of the Earth or another planetary body is referred to as a landform. A given terrain is made up of several landforms, and topography refers to how these landforms are arranged in the surrounding area. In addition to shoreline characteristics like bays, peninsulas, and seas, landforms also include hills, mountains, canyons, and valleys. Submerged structures like volcanoes, mid-ocean ridges, and major ocean basins are also considered to be landforms.
Physical characteristics of landforms, such as height, slope, orientation, stratification, rock exposure, and soil type, are used to classify them. Intuitive elements like berms, mounds, hills, ridges, cliffs, valleys, rivers, peninsulas, volcanoes, and many more structural and size-scale elements, including different types of inland and marine waterbodies and sub-surface features, are all examples of gross physical features or landforms.
The landform made of wind are :
The erosional landform madeup of wind is Mushroom rock, zeugen, demoselles, yardang etc.
To get more information about landforms:
https://brainly.com/question/17824484
#SPJ6
PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!
Answer:
The answer is A) byee!!
Explanation: