PLEASE HELP!!
Calculate the transfer of energy by a force of 15N when it movies the object by a distance of 5 m
a. In the direction of the force
b. In the direction at 60 degrees to the direction of the force
c. At right angles to the force
Answers
Answer:
a. 75 joules
b. 37.5 joules
c. 0 joules
Explanation:
work is defined as the product of force times the distance moved in the direction of the force
Given data
force F= 15N
distance S= 5m
In the direction of the force\(force= 15*5\\force= 75 joules\)
2. In the direction at 60 degrees to the direction of the force
\(force= 15cos 60* 5\\force= 15*0.5*5\\force= 37.5 joules\)
3. At right angles to the force
\(force= 15cos 90* 5\\force= 15*0*5\\force= 0 joules\)
Related Questions
help me pls i need the answer
Answers
Which effect is created when two sound waves that are close in pitch
interact?
O A. Echoes
O B. Loudness
C. Beats
O D. Intensity
Answers
Answer:
C. Beats
Explanation:
When waves are interfering with each other, the sound is louder in some places and softer in others. As a result, we hear pulses or beats in the sound.
Answer:
beats
Explanation:
got it right
What are the positive and negative effects of the mountain-climbing trade on the local environment and economy? 3-5 sentences, please thx
Answers
(you can just say a color)
Answers
Answer:
I think its red
Explanation:
divide the distance 8000 by the hours 10 to get 800
Answer:
Red.
Explanation:
If you divide the distance by the time, you will discover that the airplane traveled 800 miles per hour.
Pls mark Brainliest with the crown.
How is energy connected? CORRECT ANSWER GETS BRAINILIEST!
a) Energy is connected through chemical bonds
b) Energy is not connected
c) energy is connected through light waves
d) Energy is connected as it constantly moves from one place to another
(Explanation is unnecessary, only answer! Thank you in advance!)
Answers
100 POINTS AND BRAINLIEST NO CAP IF YOU WRITE THIS CORRECTLY AND DECENTLY IF YOU HAVE A QUESTION PUT IT IN THE COMMENTS NOT AN ANSWER PLS
You have learned that power is the speed, or rate of doing work. In this report you will learn more about James Watt or horsepower.
Here is your goal for this assignment:
Complete an activity on power
Complete one of these activities:
1. Research the life of James Watt. Report in about fifty words some of the important events in Watt's life leading up to the watt being named in his honor.
2. Conduct a survey of equipment and cars to find out the amount of horsepower of each item you check. You may visit a car dealer, an appliance store, a heavy-equipment dealer. Make a list of the horsepower of at least ten items of equipment. Some suggestions include: comparing two or three different makes of cars or finding the horsepower of a lawn mower, boat, vacuum cleaner, or some heavy equipment for moving dirt. You may find that the power of a washing machine or vacuum cleaner is given in watts instead of horsepower. Make a chart to record your findings, including:
Type of Equipment Surveyed: (Indicate whether it is a car, shovel, vacuum cleaner, etc.)
Amount of Horsepower or Watts: (Record power in horsepower or in watts.)
Answers
Power is the rate at which work is done. James Watt is a famous engineer and inventor who developed the steam engine.
Who is James Watt?He improved the efficiency of the engine by adding a separate condenser, which reduced the amount of fuel needed. In his honor, the watt was named after him as the unit of power.
For the activity, here is a suggestion; conducting a survey of equipment and cars to find out the amount of horsepower of each item you check. You may visit a car dealer, an appliance store, a heavy-equipment dealer.
Make a list of the horsepower of at least ten items of equipment. Some suggestions include: comparing two or three different makes of cars or finding the horsepower of a lawn mower, boat, vacuum cleaner, or some heavy equipment for moving dirt. You may find that the power of a washing machine or vacuum cleaner is given in watts instead of horsepower. Make a chart to record your findings, including:
Type of Equipment Surveyed: (Indicate whether it is a car, shovel, vacuum cleaner, etc.)
Amount of Horsepower or Watts: (Record power in horsepower or in watts.)
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Someone places a spoon in hot water. The spoon remains in the water till the water becomes room temperature, what temperature is the spoon handle?
Answers
Answer: Room temperature
Explanation: it makes sense (sorry if its wrong)
what's the answer quick help me please
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After analyzing the above problem, we can conclude that the best parameters are options A, C & D in the above case.
To determine which projects meet the family’s eligibility criteria for maximal energy savings per dollar spent on the project, we can calculate each project's energy savings per dollar per year. This can be calculated by dividing the annual energy savings by the cost of the project. Here are the calculations for each project:
Install more attic insulation: annual energy savings per dollar = 550 / 1900 ≈ 0.289Install energy-efficient doors: energy saved per dollar per year = 50 / 400 = 0.125Closed air leakage from the attic: energy savings per dollar per year = 200 / 300 ≈ 0.667Seal crawl space under the house: Energy saved per dollar per year = 350 / 1500 ≈ 0.233Install storm doors: annual energy savings per dollar = 25 / 300 ≈ 0.083Based on annual energy savings per dollar spent on the project, the three projects that best meet the family’s values are:
Closed air leaking from the attic: This project has the highest energy savings per dollar spent, about 0.667.Install more roof insulation: This project's energy savings per dollar is slightly less than covering the leaks, but it is still slightly higher at 0.289.Seal Crawl Space Under House: This project also provides slightly better energy savings per dollar, around 0.233.These three initiatives (Closed air leakage from the attic, installing more insulation, and crawl space under the house) may result in significant energy savings and more efficient use of a family’s budget than any.
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Why is iteration an important part of the design process? Give examples from your experience to support this.
Answers
Answer:
redundancy of a numerical or computational strategy connected to the result of a past application, ordinarily as a implies of getting progressively closer approximations to the arrangement of a problem. This is an example I can give.
Use the data in the table to explain how you could determine the volume of the block.
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To find the volume of the block, subtract the initial water volume from the final water volume, convert the change in water volume to cubic centimeters, and consider it as the volume of the block.
To find the volume of the block using the measurements provided.
1. Calculate the change in water volume:
The initial water volume is given as 62.3 mL, and the final water volume is given as 89.5 mL. To determine the change in water volume, we subtract the initial volume from the final volume: 89.5 mL - 62.3 mL = 27.2 mL. This value represents the increase in water volume caused by placing the block in the graduated cylinder.
2. Convert the change in water volume to cubic centimeters:
Since 1 mL is equivalent to 1 cubic centimeter (cc), we can directly convert the change in water volume from milliliters to cubic centimeters. In this case, the change in water volume is 27.2 mL, which is also equal to 27.2 cc.
3. Determine the volume of the block:
When the block is placed in the graduated cylinder, it displaces some amount of water, resulting in an increase in water volume. By measuring this increase in volume, we can determine the volume of the block itself. In this case, the change in water volume of 27.2 cc represents the volume of the block.
By following these steps, we can find the volume of the block based on the provided measurements.
Therefore, By deducting the initial water volume from the final water volume and converting the difference in water volume to cubic centimeters, the block's volume can be calculated. the volume of the block is 27.2 cc.
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•Then I should :calculate the time of the block to fall
Help due 2:45 est (SCIENCE)
Does the moon have gravity? How do you know? Support your answer using evidence.
Answers
Answer:
Gravity is experienced on the moon but since the moon is much smaller and has less mass than the Earth, the gravitational pull on the surface is lower compared to that on the surface of Earth.
Explanation:
Yes, the moon has gravity. This is evidenced by the fact that it not only attracts objects on its surface, but it also influences the tides of the Earth's oceans. The moon's gravitational pull creates the distinctive tidal bulges that cause the daily rise and fall of the ocean tides. This interaction between the moon's gravity and the Earth's oceans is evidence of the moon's gravitational field. Additionally, space missions to the moon have shown that objects and astronauts on the moon's surface are subject to its gravitational pull.
Huan wants to enter the science fair at his school. He has a list of ideas for his project. Which questions could be answered through scientific investigation? Check all that apply. Does pressure have an effect on the solubility of a substance? Which physicist was the smartest? Is the information on the periodic table difficult to understand? Which brand of soap is the best for cleaning grease off of dishes? Which laboratory experiment is the most fun to perform?
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The image shows the cone forecast map of a hurricane.
Four locations (I, II, III, IV) are labeled on the diagram. At which of the four locations is the hurricane predicted to be LEAST intense?
A.) I
B.) II
C.)IV
D.) III
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Which group was designed to study Saturn?
A. Cassini, Hubble, and Huygens
B. Huygens, Voyager 1, and Hubble
C. Voyager 1, Huygens, and Cassini
D. Voyager 1, Hubble, and Cassini
Answers
The group which was designed to study Saturn is C. Voyager 1, Huygens, and Cassini. It was a collaborative mission involving NASA, ASI, and ESA.
The trio of Voyager 1, Huygens, and Cassini embarked on groundbreaking missions, collectively enhancing our understanding of Saturn and its diverse moons. Launched by NASA in 1977, Voyager 1 ventured into the outer solar system, conducting close flybys of Jupiter and Saturn, capturing detailed imagery and valuable scientific data.
Huygens, a constituent of the collaborative Cassini-Huygens mission involving NASA, ESA, and ASI, made a historic touchdown on Saturn's moon Titan in 2005. It meticulously examined Titan's atmosphere and surface, yielding unprecedented insights.
Meanwhile, the Cassini spacecraft, another integral part of the Cassini-Huygens mission, meticulously orbited Saturn for more than 13 years. Cassini extensively studied Saturn's rings, atmosphere, and numerous moons, unraveling captivating discoveries such as new moons and tempestuous storms.
The Cassini mission culminated with a planned atmospheric entry into Saturn. These missions collectively revolutionized our knowledge of Saturn, its enigmatic rings, and its captivating moons.
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Justin and Oscar each hit a baseball with a bat. The baseballs have the same mass, but the ball Justin hits has a greater acceleration. What might be the reason for the greater acceleration of Justin's baseball?
Answers
The acceleration is different in both cases because, the force applied is different. Acceleration is force divided by mass of the object. Thus, Justin had greater force than Oscar.
What is force ?Force is an external agent acting on body to change its motion or deform it. There are various kinds of forces such as frictional force, gravitational force, nuclear force etc.
According to Newton's second law of motion, the force acting on an object is the product of its mass and acceleration.
Thus, F = ma
Hence, as the force increases the body is accelerated more.
With the same mass for the two balls, the force used to hit it was different and thus, the acceleration differs in both cases. Therefore, Justin has the greater force.
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Okay! Last question was a warm-up question. And now to get your brain thinking some more, how about another one?:
First you eat me, then you get eaten. What am I?
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Same diagram... At which location would it be possible for a SOLAR ECLIPSE to happen? *
A
B
C
D
E
F
Answers
Answer:
A
Explanation:
The moon needs to be in front of the earth to cast a shadow
When you drop something, first of all it accelerates.
The faster it falls, the bigger the force of ______ that acts on it.
choose from the list to complete the sentence:
friction gravity air pressure
note: apparently the answer is friction but it doesn't make sense to me so please explain.
Answers
The faster an object is going, the more resistance there will be. An example of this would be if you're running the faster you run, the more air is going against you.
I hope this helps!
Describe 3 factors an engineer should take into consideration when choosing material for building the pipes in a pipeline
Gr. 8
Think it has something to do with Viscosity, Density, and Pressure but not sure what
Answers
Answer: 1. Material being transported 2. The temperature of the material being transported 3. How long the pipes will be there (lifespan)
Explanation: 1. - The pipe builder should consider the material being transported to choose the correct material of the pipes to use, so they last long and can hold the material.
2. - Similar to 1, the pipe builder should consider the temperature of the material to choose the correct material of the pipes to use, so the pipes don’t break and function properly.
3. - If the pipe builder uses a material that can hold the material, that’s great! If that material will last a short time, it would not work if the pipes were to be used for a long time.
The things you said before about viscosity, density, and pressure are also correct. The correct answers are mainly talking about factors of the material being used in the pipes.
hope this helped :)
PLEASE HELP LOL XDDD
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Answer:
LOL XDDDDDDDDDDDD SO FUNNNNYYYYYYYYYYYYYY WOOOOOOOWWWWW 69420
Explanation:
Answer:
I'm guessing d is the right one but not sure
Compare and contrast the THEME in the short story you read with the elements appearing in The Watsons Go to Birmingham—1963. Explain how they are similar or different in a few sentences.
Answers
Answer: I am so sorry but I am not sure I have spent 15 minutes trying to figure this out
Explanation:
Which of the following forces has not changed Earth's surface?
folding
erosion
weathering
gravity
Answers
Answer:Gravity is the force among the options listed that has not directly changed Earth's surface.
Explanation:
Gravity is a fundamental force that acts on all objects with mass, including the Earth itself, but it does not cause changes or modifications to the Earth's surface features. Instead, gravity influences the movement of materials and the shape of the Earth's surface by exerting a pulling force on objects. On the other hand, folding, erosion, and weathering are all processes that directly contribute to shaping
"How does mass affect thermal energy transfer?
Answers
Answer:
The greater the mass of a substance the more thermal energy. The thermal energy of a substance depends on the temperature and mass of that substance.
Explanation:
Answer:
Explanation:
If two objects have the same mass, the object with the higher temperature has greater thermal energy. Temperature affects thermal energy, but temperature isn't the same thing as thermal energy. That's because an object's mass also affects its thermal energy.
Why is it important for a peer to review your writing, in addition to reviewing it yourself?You still have the ideas in your head, so you may not notice when they did not make it onto the page.
You will ignore all of the problems in your report because you won’t want to fix the problems.
All of the above
A peer has a better understanding of your topic than you do and can find mistakes.
Answers
Answer:All of the above
Explanation:
When you lift a book from the ground to your desk, what kind of work do you do, negative or positive? By lifting the book, what do you change? Does the book gain or lose energy? What kind of energy?
Second question: A ball with a mass of 5.0g is moving at a speed of 2.0 m/s. Would doubling the mass or doubling the speed have a greater effect on the kinetic energy of the ball? Explain.
Answers
Answer:
When you lift a book from the ground to your desk, you do positive work. By lifting the book, you are increasing the object's gravitational potential energy. The book gains energy. It is gravitational potential energy.
Explanation:
Positive work is said when the force exerted on the object is in the same direction as that of the direction of its displacement.
Negative work is said to be done when the force exerted on the object is in the opposite direction as that of the direction of its displacement.
In this case, the force exerted on the book is in the upward direction and is in the same direction as that of its displacement. Hence, we are doing a positive work. Gravity is doing a negative work.
When we lift the book, we are changing its location from ground to the desk and in this process, the book is gaining energy. The energy gained by the object is gravitational potential energy.
Gravitational potential energy is the energy which is possessed by the virtue of the object's position of location.
Answer:
1)When I lift the book, I do positive work. By lifting the book I change its location. The book is gain energy and it is potential energy.
2)Doubling the mass or doubling the speed will have a greater effect on the kinetic energy of the ball. Because doubling the mass would have a greater effect on the kinetic energy of the ball because you are dividing the mass by velocity and if you have a greater mass that means a bigger answer.
Explanation: I am taking the test
Which form of radiation has a frequency of 125 x 10¹⁵?
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A speed skater goes around a turn with a 25 m radius. The skater has a velocity of 15 m/s and experiences a centripetal force of 720 N. What is the mass of the skater? (10 points – you must show your work
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Answer:
Explanation:
below i solved :)
Answer: 80kg
Explanation:
What purpose would the sand serve?
FIRST ONE TO ANSWER CORRECTLY GETS BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
Answer:
Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass.
Explanation:
Interesting fact...
Why are there differences between the cooling rates of sand and water? Sand cools off faster than water because sand is a solid. Water heats up slower and cools off slower than sand. Sand heats up faster and cools off faster than water.
As a variable and to count as land. As if you were at a beach, this sand would count as the sand that the sun would be beaming on. ^^
-Answer
Three blocks are shown: Three blocks are shown. Block A has mass 3 kilograms, length 6 centimeters, height 4 centimeters, and width 2 centimeters. Block B has mass 1 kilograms, length 6 centimeters, height 2 centimeters, and width 4 centimeters. Block C has mass 2 kilograms, length 2 centimeters, height 6 centimeters, and width 4 centimeters. Which statement is correct? Block A has the greatest density. Block B has the greatest density. The density of Block A is equal to the density of Block B. The density of Block B is equal to the density of Block C.
Answers
Answer:
Block A has the greatest density.
Explaination:
Block A density:0.0625 kg/cm3
Block B density:0.020833 kg/cm3
Block C density:0.041667 kg/cm3
Helpp plssss ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
what is states of water?? please give me an example or two!!! best answer will get marked brainliest
Answers
Answer: Three states of water are liquid, solid, and gas.
Explanation:
When water is at room temperature it is a liquid, when it is at 32° F or below it is at freezing temperature and will turn to a solid known as ice, when water reaches above 212° F it will evaporate into a gas.
