An engineer wants to design a go-kart that can reach an acceleration of 20 m/s2
If the cart has a mass of 75 kg and can hold one person with a mass of 80 kg,
the engineer must design an engine that can produce a force of
newtons. *
This question involves the concepts of Newton's Second Law of Motion, Force, and acceleration.
The engineer must design an engine that can produce a force of "3100 N".
According to Newton's Second Law of Motion:
[tex]F = ma[/tex]
where,
F = Force of engine = ?
m = mass carried by engine = mass of cart + mass of person = 75 kg + 80 kg
m = 155 kg
a = acclereration of the cart = 20 m/s²
Therefore,
[tex]F = (155\ kg)(20\ m/s^2)[/tex]
F = 3100 N = 3.1 KN
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The attached picture shows Newton's Second Law of Motion.
One metre of a particular type of wire has a resistance of 30 Ω. What length of this wire will have a resistance of 6 Ω
Answer:
0.20 m.
Explanation:
Given: R = 30 Ω and L = 1 m
Resistance of 1m wire is R = V/I = 30Ω/0.1A
6Ω resistor will have the same voltage drop across it as 1m wire, so we require I to be 6A. Therefore, the required length of wire is:
L = (6A)/(30Ω) = 0.2m
William Herschel thought he had found a comet when he spotted the green disk of: Neptune. Oberon. Uranus. Titania. Triton.
William Herschel thought he had found a comet when he spotted the green disk of Uranus.
Uranus is the seventh planet located far away from the Sun. It is a gaseous planet which was discovered in 1781, mistaken by a comet but after two years it was accepted as a planet. After decades of observations and only one close visit by a spacecraft, which shows us that Uranus has unique atmosphere.
Atmosphere of Uranus is mostly made up of hydrogen and helium as well as a small amount of methane and traces of water and ammonia. The presence of methane gas gives blue colour to Uranus so we can conclude that Uranus is the planet which was thought first a comet by William Herschel.
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A force of 1000N acts to stop a 1000kg car moving at 20m/s. How much time does it take the car to stop?
Answer:
Explanation:
How much force does a 1000kg car need to accelerate at 3m s2 to the south?
Answer- the force needed to accelerate the 1000kg car by 3m/s2 is 3000N.
Energy of motion is known as __________________________ energy.
Kinetic or Potential
If you are 13 does that make you a teen i mean im 15 but my sister wants to know by the call me jeffery dahmer
Answer:
Huh??
I mean, sure??
Answer:
Yes.
Explanation:
12 is considered pre-teen and 13 is considered a teen. Uhh weird question ಠ‿ಠ
which is not part of maturity? excising self control, using good judgement, making impulsive decisions, being dependable
Answer:
using good judgement
Explanation:
An object covers a distance of 8 meters in the first second of travel, another 8 meters
during the next second, and 8 meters again during tthe third second. What is the
acceleration of the object?
Answer:
I guess the acceleration would be 8 meters a second
Explanation:
I can't think of any other fitting way to put the answer sorry if it's not right
Explanation:
8+8+8=24
3/24×100
12.5
MARK ME BRAINLIEST
What does newtons third law mean
every action has an equal and opposite reaction
A ceiling fan operates at three speeds, using 120 V of electricity from the wall. At low speeds, it uses 0.25 A. Calculate the resistance needed to generate that current. Then in 1-2 sentences, describe how the resistance would change at medium and high speeds if larger currents are needed at those speeds. Your answer should include the calculated resistance and a sentence describing your reasoning.
Ohm's law describes the relations among voltage, current and resistance. So that:
i. The resistance needed to generate the given current is 480 Ohm's.
ii. At medium speed, the resistance decreases while the current increases.
iii. The high speed requires large current but least resistance.
Ohm's law states that: V = IR
where V is the voltage, I is the current and R is the resistance.
Thus from the given question, V = 120 V, and A = 0.25, so that:
R = [tex]\frac{V}{I}[/tex]
= [tex]\frac{120}{0.25}[/tex]
R = 480 Ohm's
Therefore, the resistance required to generate a current of 0.25 A at low speed is 480 Ohm's.
Ohm's law explains that the voltage is proportional to current so that to generate greater amount of current, low resistance is required. Thus, at the medium speed, more current would be required so that the value of resistance to produce the current would be lesser than that at the low speed.
At higher speed, the value of resistance would reduce far below that attained in medium speed, so that more current would be produced. Thus the high speed requires large current but low resistance.
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The answer is 480Ω.
According to Ohm's Law, the required equation to find resistance is :
[tex]\boxed {R = \frac{V}{I}}[/tex]
Then, by direct substitution, we get :
R = 120 V ÷ 0.25 AR = 480ΩFor medium and higher speeds, the resistance would have to decrease in order to allow for more current to reach the fan. For it to operate at the necessary speeds, the resistance would have to be less than 480Ω.
15 POINTS!!!!!
Sofia has heard that buying vitamins is a waste of money because the body cannot store them. What is the BEST response to this statement?
A.
There are a few benefits to taking vitamins, but they’re not worth the cost.
B.
It is true—there is no benefit to taking vitamins, and they’re a waste of money.
C.
The body only absorbs the vitamins found in food so they’re not worth buying.
D.
This is more true of water-soluble vitamins than fat-soluble vitamins.
PLEASE NO LINKS
There are a few benefits to taking vitamins, but they’re not worth the cost. This is the BEST response to this statement. Hence option A is correct.
What is vitamin ?A vitamin is an organic molecule (or a group of closely related chemicals known as vitamers) that is required by an organism in trace amounts for appropriate metabolic activity. Essential nutrients cannot be synthesised in significant amounts by the organism and must therefore be received from the food. Vitamin C, for example, may be synthesised by certain species but not by others; it is not a vitamin in the first case but is in the second. Most vitamins are composed of groups of linked molecules known as vitamers rather than single molecules. Vitamin E, for example, has eight vitamers: four tocopherols and four tocotrienols.
Hence option A is correct.
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An object moving at a constant velocity near the surface of the earth is influenced by
Answer:
Gravity
Explanation:
The larger the object, the bigger and more powerful its gravitational field is. That is how tides and waves are made. The moon is a bit more than 1/4 of earths size. This may seem small, but its actually VERY big considering the fact that the earth is 7,917.5 miles big in diameter. AT night, the tide is more major and waves are larger because the moon is directly above the ocean, using its gravitational force to pull at the waters. Same with any other object. If you fly over the Mir Mine, an abandoned diamoned mine in russia, that you woud be sucked into the 1,722 feet pit. If you try to jump off of a falling building, instead of leaping away, you would be pulled down with the building.
Compare the amplitude of these waves.
Answer:
Explanation:
The answer to your question would be number 2 amplitude and frequency are the same so the higher the frequency the higher the amplitude. As you can see in the picture wave E has the highest frequency. which means since A has the lowest frequency and E has the highest frequency answer 2 would be correct the amplitude increases from A to E.
Amplitude of a wave is the strength of the wave. It is measured from the central line of the wave to the top of the crest or bottom of the trough. Thus, higher amplitude waves will gives sharp crests and troughs. Here amplitude is increasing from A to E.
What is amplitude?Amplitude is a parameter measuring the strength of a wave. It is the maximum displacement moved by the wave from its equilibrium position. The vibrational path will be twice that of the amplitude of the wave.
As the amplitude of the wave increases its intensity increases. Both are in direct proportion with the frequency and energy of a wave. For instance the amplification of sound waves increases the intensity of waves that we hear.
The distance between two consecutive crests or troughs is the wavelength of the wave not amplitude. Amplitude is measured from the axis line to the top of the crest thus, from exact middle of the wave crest to the top or to the bottom of trough.
Thus, higher amplitude waves will gives sharp crests and troughs. Here amplitude is increasing from A to E
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The force required to accelerate a 0.50kg ball at 50 m/s2 is (Remember F=ma) 25N 25K 50N 250N
Answer:
25n
Explanation:
I hope this helps:)
50 x 0.50
The force required to accelerate a 0.50 kg ball at 50 m/s² is 25 N.
What is force?A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Force = mass*acceleration
Force = 50 x 0.50
Force = 25 N
The force required to accelerate a 0.50 kg ball at 50 m/s² is 25 N.
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scientist who discovered that the nucleus contains neutrons in addition to protons.
Answer: James Chadwick
:)
5. Which way of getting a boulder to the top of a hill will give the boulder the most potential energy?
A. Lifting the boulder will yield the most potential energy
B. Rolling the boulder will yield the most potential energy
C. Using a set of stairs on the hillside will yield the most potential energy
D. That's silly, either way will provide the same amount of potential energy
Answer:
it is option "d" that's silly either way will provide the same amount of potential energy
Explanation:
because kinetic energy is a body in motion and potential energy is a body at rest and a rock being pulled or pushed still poses the potential energy it is the body that pushes it that possess kinetic energy
PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!
Pauline is hoping to lose weight so she is going to eliminate all fats from her diet and stick strictly to fruits and vegetables. What is the BEST advice for Pauline?
A.
This is a great plan and she should stick to it.
B.
Without fats, she will not have enough energy.
C.
She should include a small amount of fat in her diet.
D.
Since fat boosts the immune system, she will likely get sick.
PLEASE NO LINKS
Answer:
C
Explanation:
If she wants to lose weight she needs to have a balance diet
Answer:
C
Explanation:
the answer is c because it makes the most sense
NEED HELP!!! ANSWER THESE 5 QUESTIONS FOR 25 POINTS!!!! PLEASE ANSWER!! I WILL GIVE YOU BRAINEST
1. Why would oxygen levels make a difference in athletic performance?
A.
Muscles need oxygen to function well.
B.
It is just one biometric that is studied.
C.
Oxygen is important for everyone, not just athletes.
D.
Athletes require less oxygen than those who are less active.
2. Dina has been working out for a few weeks. She wants to really focus on developing healthy habits rather than a very specific goal, like losing weight. She knows that tracking can help maintain health. What could she document that would let her see progress?
A.
She should just create a long-term goal.
B.
She could note the lengths and speeds of her morning runs.
C.
She should write down what she weighs when she wakes up in the morning.
D.
She can record what days she exercises and the type of activity.
3. Alonzo thinks that it will be best if he exercises seven days a week since that will make sure that the habit sticks. Is this the BEST way to get into healthy habits that stick?
A.
Yes, the more exercise the better.
B.
No, he needs to plan some days of rest.
C.
Yes, high achievement takes a lot of commitment.
D.
No, he does not have the same schedule every day.
4. Tracking your exercise can help you stick with an exercise routine.
A.
True
B.
False
5. Ezra has a hard time sticking with exercise routines. He does well for a few weeks, but then tends to slack off a bit. What would be the BEST way for Ezra to motivate himself to stay on the program that he creates for himself?
A.
Build in small rewards when he achieves his goals.
B.
Recognize that the next time probably will not work well.
C.
Join an expensive gym so he is more motivated to exercise.
D.
Remind himself of his past failures to motivate him to succeed.
PLEASE NO LINKS!!! IF IT IS NOT THE ANSWER THEN I WILL REPORT
Answer:
1.A
2.D
3.B
4.A
5.A
Explanation:
Every physical activity requires a specific amount of oxygen for the human organs (heart, lungs, and muscle). Athletes must breathe efficiently to perform at their best, since a high oxygen level reduces fatigue and dizziness and promotes peak performance. Thus option 1. A, 2. D, 3. B, 4. A, 5. A is correct.
What oxygen levels make an in athletic performance?The range of 95-99% represents normal, healthy oxygen saturation levels. And can be simply measured with a fingertip pulse oximeter, a cheap, basic equipment. Your blood oxygen saturation is most likely within the typical range for active, healthy athletes (like you!).
Numerous websites that promote the purported advantages of breathed oxygen can be found by searching for “supplemental oxygen and athletes.” Almost all of them receive funding from businesses that sell oxygen.
Therefore, Because it doesn't function, more oxygen is not regarded as a performance-enhancing substance.
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Who is Nichola Tesla?
Answer:
Nikola Tesla
Serbian-American inventor
sorry if this doesn't help :(
Explanation:
Answer:
Nikola Tesla was a Serbian American inventor, electrical engineer, mechanical engineer, and futurist. He was known for his contributions to the design of the modern Alternating Current (AC) electricity supply system. He was born and raised in the Austrian Empire, studying Engineering and Physics in the 1870s without receiving a degree. His works were claimed by Thomas Edison.
write a summary description of what happens to the light when it goes from one medium to another. use the following vocabulary words in your summary: index of refraction, incident angle, reflected angle, and refracted angle.
Answer:
when light goes from one medium to another, refraction is taken place. refraction is the bending of light. and the center part of the bending is called the reflected angle. the index of refraction is the measure of the bending of a ray of light when passed from one medium into another. the refracted angle is the angle between a refracted ray and the normal drawn at the point of incidence to the interface at which refraction occur.
Explanation:
I think I got all of the definitions. you can use the definitions to help you understand what you write about.
Some people have proposed a new way to build houses in areas that are likely to experience tsunamis. In this design, a house wouldn’t have solid walls on all four sides. Instead, some of the wall areas would be replaced by substances that water can travel through quickly, as shown in the diagram. How would this design help a house survive a tsunami? What drawbacks might there be to this design?
This could actually help. By doing this if the house is strong enough the water would go straight through the house just destroying furniture and anything else inside your house. This could also still hurt you the water could miss and still destroy your house so having this would have been a waste of money.
Answer:
It would help, because it would destroy everything inside the house, but not the house itself. Although whatever got ruined in there would have to be payed for, or the wave can miss.
Explanation:
What rocks make up most of the Earth’s crust? What happens to the temperature as we traveled closer to the center of the Earth?
Within 3.5 s of lift-off, a space shuttle reaches an altitude of 3.50 102 m, uniformly accelerating during the entire time. ( /7)
(a) What is its acceleration?
(b) At what speed is the shuttle traveling when it reaches this altitude?
(c) How long would it take the shuttle to travel the next 350 m if it stops accelerating after 3.5 s?
Hi there!
(A)
We can solve for acceleration using the following equation:
Δd = vit + 1/2at²
The shuttle lifts-off from rest, so:
Δd = 1/2at²
Rearrange to solve for 'd':
2Δd/t² = a
2(350)/(3.5²) = 57.14 m/s²
(B)
Now, we can use this equation to solve for final velocity:
vf = vi + at
vf = at
vf = 57.14 × 3.5 = 200 m/s
(C)
Now, we can use the following equation to solve for displacement:
Δd = vt
Δd/v = t
350/200 = 1.75 sec
A car with a mass 1235 kg accelerates at 3.82 m/s2. What is the total force exerted by
the car on the road (answer in N to two decimal places)?
Answer:
4717.70 NExplanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question
mass = 1235 kg
acceleration = 3.82 m/s²
We have
force = 1235 × 3.82 = 4717.7
We have the final answer as
4717.70 NHope this helps you
what is the radius of the event horizon of a 10 solar mass black hole?
Answer:
about 30 km
Explanation:
about 30 km
The event horizon radius of a non- rotating 10 solar mass black hole is about 30 km.
Someone's goods there?well answer this question I'll make you brainliest
(easy questions and if you get it, you're cool
can u show me all of the options so i can answer it correctly pls and ty
Specialized businesses that help coordinate dealings between other companies are called:
A.
agencies.
B.
corporations.
C.
training facilities.
D.
mediators.
Answer:
B
Explanation: You have a company that distribute the business that people work in
Specialized businesses that help coordinate dealings between other companies are called Agencies. Thus, the correct option is A.
What are Agencies?Specialized businesses are the businesses which have their own marketing opportunities and challenges as well. This is also known as niche marketing, and the focus here is on the connection of business with a specific, targeted audience and also communicating the features and benefits of the products or services of their businesses.
An agency generally refers to a relationship that is comprising of two parties, where one party is called the agent, whereas the other party represents the principal party. An agent is usually hired by the principal party to perform an act or service on his own behalf.
Therefore, the correct option is A.
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3. Which of the following descriptions correctly describes the structure of an atom? A. An atom has a central nucleus that contains protons and neutrons with electrons orbiting the nucleus B. An atom has a central nucleus that contains protons and electron with neutrons orbiting the nucleus C. An atom has a central nucleus that contains electrons and neutrons with protons orbiting the nucleus. D. An atom is made up of randomly organized protons, neutrons, and electrons
Answer:
D. An atom is made up of randomly organized protons, neutrons, and electrons
Explanation:
Brainliest Answer Pls
The description that correctly describes the structure of an atom is as follows:
An atom has a central nucleus that contains protons and neutrons with electrons orbiting the nucleus.Thus, the correct option for this question is A.
What are the characteristics of an atom?The characteristics of an atom are as follows:
Atoms are naturally occurring components.They are formed via inorganic processes. They always bear a specific chemical composition. They are always found in a solid state.Atoms generally consist of three subatomic particles, i.e. electrons, protons, and neutrons. Protons are positively charged particles that are present in the nucleus of an atom along with neutral particles neutrons.
While electrons are consistently revolving in the orbitals around the nucleus of an atom. These particles are negatively charged in nature.
Therefore, the correct option for this question is A.
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Use this picture to explain that an electrically charged object can attract an uncharged object without any contact. Your answer should be at least three sentences long
Answer:
Explanation:
1. The balloon isn't in any physical contact with the attracted substance.
2. The substance is sticking on the surface of the balloon.
3. This follows the theory of opposite charges attracting.
Convert 463.833 m/s to km/ min
Answer:
27.82998 km/min
Explanation:
To convert m/sec into km/hr, multiply the number by 18 and then divide it by 5.
