5. How is the hydrogen gas balloon different from the hot air balloon? explain this in terms of density

Answers

Answer 1

Answer:

either helium or hydrogen

Answer 2

Answer:

As air is heated, it becomes less dense than the surrounding cooler air. The less dense hot air has enough lifting power to cause the balloon to float and rise into the air.

Explanation:


Related Questions

People in accounting record, classify, summarize, analyze, and communicate a business's financial information for use in management decision-making.

Question 1 options:
True
False

Answers

Answer:

TRUE

Explanation:

hello nezuko its me bakugo

an HV battery radiator has intake air routed through the cooling fins of the ____ or heat exchanger before it circulates over the battery packs

Answers

Answer:

While inspecting the vehicle when it is hot, it is found to have excessive coolant in the coolant recovery container. After the engine cools the level returns to normal. Tech A says that this could be caused by a restriction in the radiator.

Explanation:

How much does it cost to fix a rail road

Answers

Answer:

money

Explanation:

23.6 Of the three possible modes by which a cutting tool can fail during a machining operation, which one is most preferable: (a) fracture failure, (b) gradual wear, or (c) temperature failure

Answers

Answer:

b) gradual wear

Explanation:

what is the name of the flap on the horizontal stabilizer

Answers

Swag Answer:

They are called elevators

Swag Explanation :

They are called that for whatever reason mAsqUErADE MaSquerade tHat iS mY nAmE

You are given a rectangular piece of cloth with dimensions X by Y, where X and Y are positive integers, and a list of n products that can be made using the cloth. For each product i in [1,n] you know that a rectangle of cloth of dimensions ai by bi is needed and that the final selling price of the product is ci. Assume that ai, bi, and ci are all positive integers. You have a machine that can cut any rectangular piece of cloth into two pieces either horizontally or vertically. Design an algorithm that finds the best strategy for cutting an X by Y piece of cloth so that the products made from the resulting pieces give the maximum sum of selling prices. You are free to make as many copies of a given product as you wish, or none if desired. How can i prove that the recursion is exponential and that dynamic programming is polynomial

Answers

The proof that recursion is exponential and that dynamic programming is polynomial is given by the formula;

P(x,y) = max{

P(x,y)

max (1 <= h <= X) { P[h, Y] + P(X - h, Y) }

max (1 <= v <= Y) { P[X, v] + P[X, Y - v] }

}

To prove that the recursion is exponential and that dynamic programming is polynomial. we will do so as follows;

Let us first have the assumption that the cloth is in such a manner that  either way, a product can be oriented. This implies that that after a cut, we will now have two pieces of cloth.

Now, we will make a list of the side lengths of the products that can fit in the piece after which we will consider a vertical cut for each of the side length as well as a horizontal cut for each of the side length, then we apply the same algorithm to each of the two resulting pieces.  

Thus, after the point above, it is likely true that in some instances, there may be a place to cut that is not at a product side length. However, It might be better for us to make a list of lengths composed of one or more pieces side by side as long as the sum is less than the length of the side being considered.

 

Lastly, we would note that this recursive approach is not limited to just two -dimensional problems as It could also be applied to a single or more than two dimensions. A useful proof would be to prove it for one dimension, then assuming it is true for n dimensions, prove it is true for n + 1 dimensions.

Thus;

P(x,y) = max{

P(x,y)

max (1 <= h <= X) { P[h, Y] + P(X - h, Y) }

max (1 <= v <= Y) { P[X, v] + P[X, Y - v] }

}

Read more at; https://brainly.com/question/11665190

If the actual work is 0.85 MJ for a compressor, and the isentropic compressor work is 0.8 MJ, what is the isentropic compressor efficiency

Answers

Answer:0.94

Explanation:

nc=(wc,isentropic)/(wc,act)

Gilberto wants to take out a loan for college, but he does not want the interest to accrue until after he graduates. Which loan should he apply for?

Answers

a scholarship loan i’m pretty sure

Which of the following maintenance items helps to ensure the vehicles engine lasts as long as possible?

A) cabin air filter

B) tire rotation

C) oil change

D) all of the above

Answers

Answer:

c

because oil is preventing corrosion and rust

Hey answer quick for 20 points

Answers

Answer:

Hey.....Thanks but FYI this is only 8 points....If u want to put 20....try putting 40...
Thank you!!!!!!!!!!!!!!!!

A forced-air heating system uses a system of ____ air ducts to deliver warm air to the conditioned spaces.

Answers

Answer: A forced-air heating system uses a system of (supply) air ducts to deliver warm air to the conditioned spaces.

A change in what component of microscopy influences the apparent size of the objects being viewed?.

Answers

Magnification is known to often influence the size of an object under the microscope. A change in what component of microscopy influences the apparent size of the objects being viewed is called magnification.

An Increased magnification will lead to an increase the apparent size of the object. Magnification is simply known to be the process of making bigger the apparent size of something.

Magnifying glasses is also known to make objects looks bigger due to their convex lenses. The magnification can be said to be positive or negative in its work.

Learn more about magnification from

https://brainly.com/question/15744335

water 1°C.
12. Force is measured in
in the SI metric system.

Answers

Answer:

because metric units are decimal based they are easily converted by moving decimal points

Working upward from the stove, the worker just installed K2654. What part should be installed next?

Answers

Answer: adapter J44493

Explanation: it’s above the previous

How do you earn Brainliest?

Answers

But two people have to answer or one person after a while before it’ll pop up as an option

Which principle of the software engineering code of ethics has gilbert violated?.

Answers

Answer:

Judgement

Explanation:

Gilbert is required by the Judgement Principle to "disclose those conflicts of interest that cannot reasonably be avoided or escaped." Since Gilbert professionally believes that the software meets specifications, secures documents, and satisfies user requirements, it is not clear if he violated any principle. However, he could have informed his client of his interest in the software and also presented other software packages of different companies from which the client could make its independent choice.

What happens when you put diesel in a gas engine.

Answers

Explanation:Since diesel fuel is thicker and denser than gasoline, the fuel pump will struggle to move the diesel/gasoline mixture through the system. Instead, it will clog up the fuel filter. And whatever amount of diesel that then makes its way to the engine will clog the fuel injectors, making them inoperable.

“We have to redo the deck we built last week,” Bennett tells his coworkers. “I just tested it, and it doesn’t hold the minimum weight that the county requires. We have to replace it even though the client likes it as is and fixing it will cost us money.” What type of behavior is this?

A.
needs-driven

B.
consumer-driven

C.
emotional

D.
ethical

Answers

Answer:

Consumer-driven

Explanation:

Bcz he told the cost of money

Question
The CNC is the primary interface between the machine operator and the machine. Is this statement TRUE or FALSE?
True
False

Answers

Answer:

True

Explanation:

The CNC is the primary interface between the machine operator and the machine.

Mark has a baking tray with 24 muffins the muffins are arranged in 4 rows how many muffins are in each row

Answers

Answer:

6

Explanation:

I know this because if you divide 24 by 4 you get 6

Question 9 (1 point)
In the Standard Automotive Tire Designation P205/65R 15 94 T, the ________ is 94.

a)Load Index
b)Tread Height
c)Speed Rating
d)Wheel Height

Answers

Answer:

The Load Capacity is 94

Explanation:

I hope this helps!

Which cars are least likely to have catalytic converter stolen

Answers

Answer: Cars most likely to have catalytic converter stolen

Vehicles that have had the most thefts are: Toyota Prius, SUV's of all makes, Pick up Trucks of all makes, van's (mostly Honda), passenger cars (mostly Honda), 2 U-Haul trucks. Gov. Roy Cooper recently signed a bill that makes catalytic converter theft a felony.

Explanation:

direction: fill in the blanks you can find your answer in the box provided below write your answer in blank provided.
1. Never wear open toed ______ while working with hot metal or welding apparatus.

2. The ______ must make a perfect seal around the ear to be effective

3. the ______ must be kept free of abrasions scrapes and nicks.

4. an apparatus worn over the mouth and nose to prevent inhalation of dust is ______.

5. when grinding and cutting _______ should be used.

6. the _______ makes you work with one hand only.

7. you should wear _______ to protect the feet from falling or rolling object.

8. the ______ prevent the entry of sparks between our clothes and body.

9. the ______ must be worn while inside the workshop.

10. the ______ is more convenient to use because it allows both hands to work freely.​

Answers

Answer:

1) footwear (100% sure)

2) earmuffs (100% sure)

3) welding helmet

4) respirator (100% sure)

5) safety glasses

6) hand held shield (100% sure)

7) safety shoes (100% sure)

8) leather jacket

9) hard hat (100% sure)

10) safety harness (100% sure)

The football team has a total of 20 jerseys. There are 6
​medium-sized jerseys. What percent of the jerseys are​ medium-sized jerseys?

Answers

20% of the jerseys are medium sized

Answer:

89

Explanation:

EverFi future smart pie chart
Bond: 20%
Mutual fund: 15%
Stock: 50%
Savngs account: 15%

Answers

Answer:

wow!!!!!! you pie chart is sweet

The representation of the following data in a pie chart is given in the diagram;

Bond: 20%Mutual fund: 15%Stock: 50%Savngs account: 15%

What is pie chart?

A pie chart is a circle which is used for the diagramatic representation of data. It is usually done by dividing the circle into different areas or slices to represent each data.

Each slice could be used to represent different units such as degree, percentage, centimeters, kilograms.

Bond: 20%

Mutual fund: 15%

Stock: 50%

Savngs account: 15%

Total = 20% + 15% + 50% + 15%

= 100%

Learn more about pie chart:

https://brainly.com/question/796269

#SPJ2

8. The two-stroke engine must still complete all four stages of operation-it just does this in two piston strokes instead of
O A. two
O B. four
OC. one
O D. three

Answers

Answer:

4

Explanation:

you are just doubling it

Answer:four

Explanation:

NO SCAMS

The Air Force is F 22 raptor fighter jets mass is 21,000 KG the F 22 is flying at a height of 26,000 miles what is its gravitational potential energyThe Air Force is F 22 raptor fighter jets mass is 21,000 KG the F 22 is flying at a height of 26,000 miles what is its gravitational potential energyThe Air Force is F 22 raptor fighter jets mass is 21,000 KG the F 22 is flying at a height of 26,000 miles what is its gravitational potential energyThe Air Force is F 22 raptor fighter jets mass is 21,000 KG the F 22 is flying at a height of 26,000 miles what is its gravitational potential energy

Answers

Answer:

2758.09

Explanation:

SUBJECT : SCIENCE


the change in temperature will not be the same for all substances assuming that the same amount of heat is added or subtracted because​

Answers

because not all substances react the same to temperature changes. If you heat a metal and an organic substance and you turn the temperature up, the organic substance like water will react (boil) while most metals need higher temperature to react.

a solid yellow line on your side of the center stripe means

Answers

It means:

"Do Not Pass." When parking near a corner, you may park your vehicle no closer than 20 feet from a crosswalk.

<3

Which of the following is critical when performing maintenance?

A) informing a customer of the vehicles tire pressure.

B) informing a customer of a vehicle concern.

C) informing a customer of the vehicle’s manufacturer date.

D) informing the customer of maintenance promotions.

Answers

I think the answer is C
Other Questions
Solid calcium hydroxide is dissolved in water until the pH of the solution is 11.44. The hydroxide ion concentration [OH] of the solution is:______.A. 1.1 * 10-11 M.B. 3.06 M.C. 8.7 * 10-4 M.D. 1.0 * 10-14 M.E. None of these. the 14th amendment of the constitution provides americans with what? Which type of inheritance is described here?A gene on chromosome 2 in mice can cause males to lose their hair earlier than females. La sur de ton pre est what occurs when someone places an ice pack on an injured ankle? Is this an example of symbolism? James saw a black cat from the car window on his way to a job interview. find the zscore which the area to the left is 0.46 Find the slope given two points: (-9, -2) and (-5,0) I don't know the answer pls help what are the 5 changes you can get in sociocultural? who may perform a post-exposure medical evaluation? In addition to teaching firearm and hunting safety, why is hunter education important? It promotes longer hunting seasons. It promotes responsible hunt pls help ill mark brainliest!!Interpret the slope of the function in the terms of the problem. 25 ml of water are lost every hour5 ml of water are lost every hour10 ml wat are lost every hour2mL of water are lost 92% of what number is 30? Please answer quick! Read this sentence from the passage.In the United States during the early 1900s, most people thought of automobiles as a passing fad.How does this sentence support the author's purpose in writing the passage? What is the total volume of both storage spaces if one side of the large storage space is 4 feet long? Suppose y varies directly with x. If y=16 when x= 8, find x when y=10 Describe the Texas military force at the Alamo?Describe* Priya bought these items at the grocery store. Find each unit price.4 rolls of toilet paper for $2. How much is the cost per roll? what is the answer to 11/12-7/9=