2. What other physical quantity might be more important to weightlifters than
how much actual work they do?

Answers

Answer 1

Answer:

The pressure on their bone  

Center of mass & balance.


Related Questions

In a “minute to win it” game, cards are placed between cups to stack them. The contestant then pulls the card out in hopes that they will end with a set of stacked cups. Why does this work?


There is no friction between the card and the cup.


Inertia will keep the top cup from moving very far. Gravity will pull one cup on top of another.


The opening of the cup is so much bigger than the bottom, even though the cup moves they will both be stacked together.


Both cups are moved the same amount by the friction between them and the card.

Answers

Answer:

There is no friction between the card and the cup.

Explanation:

Answer:

The answer option to your question is A) - There is no friction between the card and the cup.

Someone HELPPPPPPPPP
MARKING BRAINLIST JUST CHECK WORK
(15 points)

Answers

Answer: I'm pretty sure you're right. Believe in yourself!

Explanation:

The burning of fossil fuels contributes to the addition of greenhouse gases to the atmosphere. These gases trap thermal energy in the Earth’s atmosphere. Which of the following would be the most reasonable changes that could result from an increase in the burning of fossil fuels?
A. The air all over the globe would become dirtier.

B. There would be a global rise in temperatures.

C. Ecosystems would become more diverse.

D. Rates of photosynthesis would decrease.

Answers

Answer:

B. there would be a global rise in temperatures

Hence, global warming

Explanation:

hope this helped! :D

Hey there!

The answer would be B. There would be a global rise in temperatures.

If fossil fuels contribute to the addition of greenhouse gases to the atmosphere and these same gases increase because of burning fossil fuels then there would be a global rise in temperatures. Which is answer B.

Hope this helps!

Which of the following are major problems with fission reactors? maintaining high temperatures disposal of hot water disposing of radioactive waste obtaining fuel

Answers

Answer:

hot water

Explanation:

Answer:

a

Explanation:

Which of the following is an inclined plane?
- Stairs
- Wheelchair ramp
- Sloping driveway
- Road going up a mountain

Answers

Explanation:

Wheelchair ramp

An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle, with one end higher than the other, used as an aid for raising or lowering a load.

Road going up a mountain

With a bar magnet, where are lines of force the closest together?

A) At the tip of either of the magnet's poles

B) At a point outside the magnet halfway between the poles

C) Inside the center of the magnet

Answers

Answer:The lines of force in a magnet is closer together at the ends of a bar magnet.

Explanation:Is equally strong at the north pole when compared with the south pole. The force is weaker in the middle of the magnet and halfway between the pole and the center.

The answer is C. 20 characters

A book with a mass of 1.2 kg sits on a bookshelf. If it has gravitational potential energy of 50 j, how high is the shelf ? The acceleration of gravity is 9.8 m/s 2

Answers

Answer:

B

Explanation:

The shelf will be b) 4.3 m high

What is Gravitational potential energy ?

Gravitational potential energy is the energy possessed or acquired by an object due to a change in its position when it is present in a gravitational field.

given

mass = 1.2 kg

gravitation potential energy = 50J

h = ?

acceleration of gravity is 9.8 m/s 2

gravitation potential energy  = m*g*h

50 J = 1.2 kg * 9.8 m/s^2  * h

h= 4.251 m

h ≈ 4.3 m

The shelf will be b) 4.3 m high

learn more about gravitation potential energy  :

https://brainly.com/question/3884855?referrer=searchResults

#SPJ2

In a series circuit, electrons only flow along one path. Given this information, which of the following is an advantage of series circuits?
A.
The voltage is the same everywhere in a series circuit.
B.
Less resistance is produced as more devices are added to the circuit.
C.
Series circuits are simpler than parallel circuits.
D.
If one part of the circuit breaks, the other parts will still be able to operate.

Answers

Answer:

C.  Series circuits are simpler than parallel circuits.

Explanation:

In series circuit, all the components are connected in single path of current flow. If one part of the circuit breaks, the whole thing would break and none of the other parts would work. The voltage is not the same everywhere. It is different across each component. In series circuit, net resistance is more as resistance of all the components connected in series are added up. So, the only advantage of a series circuit is that is simpler than the parallel circuits.

if 34.7 g of O2 reacts with iron to form 79.34 g of iron oxide, how much iron was used in the reaction?

A.
19.84 g

B.
44.64 g

C.
104.1 g

D.
114.04 g

Answers

Answer: B. 44.64 g

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

Mass of reactants = mass of iron + mass of oxygen = mass of iron + 34.7 g

Mass of product = mass of iron oxide = 79.34 g

As Mass of reactants = Mass of product

mass of iron + 34.7 g = 79.34 g

mass of iron = 44.64 g

Thus 44.64 g of iron was used in the reaction

Plz Help! Will give brainliest!!
If the work output of a simple machine is 40 J and the work input is 50 J, the percent efficiency is _____%.
A. 5/4
B. 10
C. 80
D. 90​

Answers

Answer: 80%

Explanation:

Answer:

C.80

Explanation:

An ant starts at −5 m and moves 10 m left, 25 m right, 30 m left, and 5 m right. If the positive x-axis is to the right, what are the final position and total displacement of the ant?

A. position: −15 m; displacement: 70 m
B. position: 5 m; displacement: 10 m
C. position: 5 m; displacement: −70 m
D. position: −15 m; displacement: −10 m

Answers

Answer: D.

position: −15 m; displacement: −10 m

Explanation:

Displacement is the distance travelled in a specific direction.

Given that an ant starts at −5 m and moves 10 m left, 25 m right, 30 m left, and 5 m right

Total displacement = -10 + 25 - 30 + 5

Total displacement = -10

And the position = -10 -5 = -15

The correct answer is therefore D.

position: −15 m; displacement: −10 m

An acrobat performs with a swing, as shown in the diagram . Which of these most likely happens as the acrobat moves from Point 1 to Point 2?

A. Potential energy decreased and kinetic energy increases.
B. Potential energy increases and kinetic energy decreases.
C. Both potential and kinetic energy increase.
D. Both potential and kinetic energy decrease.

Even on a windy day, most plants can remain upright. Which structure plays the greatest role in providing a plant with this type of support?
A. nucleus
B. mitochondrion
C. cell wall
D. skeleton

Which BEST describes one way igneous rocks form?
A. Sedimentary rocks erode.
B. Sedimentary rocks are compacted.
C. Metamorphic rocks are melted, then cooled.
D. Metamorphic rocks are deposited and cemented.
Pls help! will give brainliest and 75 Points for the correct answers!

Answers

Acrobat part
A
Plants
b
Rocks
C

Answer:

Well, The first question is C. Both potential and kinetic energy increase. Then, The second question is C. Cell wall. And, The last one is B. Sedimentary rocks ate compacted. Good Luck!

PLS I NEED THIS QUICK!!!!WILL GIVE BRAINLY!
you decide to push on a brick wall with all your might for 5 minutes. you push so hard that you begin to sweat. however, the wall does not move. if you end up pushing with a force of 500 newtons, how much work did you do?

Answers

Answer:

2500

Explanation:

motives are activated by

A) thoughts.
B) internal physiological states.
C) external cues.
D) all of these

Answers

Answer:

D all of these gufjbihbuxhbi

PLEASE HELP In a bag are 7 red, 9 blue, 2 yellow and 4 green marbles. If you draw out a marble at random, what the probability that you will draw a red or blue marble? P(red ∪ blue) Question 7 options: 7/22 11/22 16/22 18/22 Q

Answers

Answer:

16/22

Explanation:

you add red and blue together

PLEASE ANSWER ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer: I believe the answer is B (the second option)

side note: this shows a physics question . . . it is not

Can someone please answer these two science questions. Please don't answer with just anything for the points, I genuinely need the answers. Thanks! :)

Answers

6.

Answer:

45 meters

Explanation:

notice that is you multiply the time with the speed the units cancel to get distance.

therefore

distance=velocity(time)

distance=(3)15

distance =45 meters

7.

Answer:

1. the speed is constant

2. the average speed is .5 m/s

Explanation:

I have attached a graph of the data in excel.

from excel i got the equation of the line to be y=.5x with y being distance and x being time.

the function is a position function so if you take the derivative of it you get the velocity which is .5.

since the derivative is a constant the the speed does not change and the average velocity is the derivative.

As a liquid the refrigerant transfers thermal energy to the
outside air
TRUE
FALSE

Answers

Answer:

True

Explanation:

As a liquid, the refrigerant absorbs thermal energy from the cool air inside the refrigerator and changes to a gas. As a gas, it transfers thermal energy to the warm air outside the refrigerator and changes back to a liquid.

A student measured the volume of three rocks. The diagram above shows the
results of her investigation. Which correctly orders the rocks from least to
greatest?
A. Rock A, Rock B, Rock C
B. Rock C, Rock A, Rock B
C. Rock B, Rock C, Rock A
D. Rock A, Rock C, Rock B

Answers

Answer:

option B is right

...............

Answer: A C B

Explanation:

If you look closely the water levels show which is bigger fun fact.

What is the basic premise of the universal gravitational law?

Answers

Answer:

Newton's law of universal gravitation is usually stated as that every particle attracts every other particle in the universe with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Explanation:

Answer:

Each object in the universe that has mass attracts every other object that has mass

Explanation:

Its the correct answer on the quiz

Based on the table, which isotope is best suited for use as a radioactive tracer for the body’s use of calcium? calcium-40 calcium-45 calcium-47 calcium-49

Answers

Answer:

calcium-47

Explanation:

Just did the test. Good Luck!

The isotopes of calcium are artificially produced to use them as a radioactive tracers. Calcium 47 is best suited for use as a radioactive tracers for body's use of calcium.

What is radioactive tracer?

A radioactive tracer consists of a chemical compound in which one or more atoms are replaced by a radioisotope.

Out of the six isotopes of calcium, calcium 47 is the most suitable isotope.

Calcium-47 consists of the half-life of about five days. This duration is long enough for biological investigations.

Thus, Calcium 47 is best suited for use as a radioactive tracers for body's use of calcium.

Learn more about radioactive tracer.

https://brainly.com/question/16360352

#SPJ2

What happens when an object absorbs all the light striking it?

It appears blue.

It appears red.

It appears black.

It appears white.

Answers

Answer:

it appears black

Explanation:

that's my best guess

The answer would be black

Question attached i need answers quick

Answers

1 P4 + 3 O2 —> 1 P4O6

how do electric and magnetic fields interact to create electromagnets?​

Answers

Answer:

8548458

Explanation:

95895

Suppose that you, with a mass of 48kg, is standing on frictionless roller skates when someone throws you a 2.50kg mass with a velocity of 15m/s and you catch it. What will be your resultant velocity?

Answers

Answer:

v = 0.74 m / s

Explanation:

We can solve this exercise using the conservation of the moment

initial instant. Before the crash

       p₀ = m v

where m is 2.50 kg and its velocity v₀ = 15 m / s

final moment. After catching the dough

      [tex]p_{f}[/tex] = (m + M) v

As the system is made up of the mass and the person, all the forces during the impact are internal, therefore the moment is conserved

       p₀ = p_{f}

       m v₀ = (m + M) v

       v = m / (m + M)   v₀

we calculate

     v = 2.5 / (2.5 + 48) 15

     v = 0.74 m / s

HEELLLPPPPP !
Match the property with the correct type of metal.
Soft
(Alkali Metals)
(Alkaline Earth Metals)
Extremely reactive
1 valence electron
2 valence electrons
Harder, more dense

Answers

Answer: Alkali metals

Soft, Extremely reactive, 1 valence electron

Alkaline earth metals

Harder, more dense, 2 valence electrons

Answer:Alkali metals

Soft, Extremely reactive, 1 valence electron

Alkaline earth metals

Harder, more dense, 2 valence electrons

Explanation:

THE PERSON ABOVE ME IS CORRECT IM JUST PUTTING THIS HERE SO YOU KNOW I GOT 100% BECAUSE OF THAT PERSON THANK YOU

Scientists studying a region in southern Florida have noticed drastic changes in the availability of freshwater. Which of the following probably did NOT contribute to these changes? A. Several years of declining rainfall B. Decrease in the population of pond plants C. Building of new homes in the area D. Construction of a dam on the local river

Answers

Answer:

C. Building of new homes in the area

I'm not totally sure but I think this is the best answer.

What do glands do for the body?

Answers

Answer: A gland is an organ which produces and releases substances that perform a specific function in the body.

Explanation: A gland is an organ which produces and releases substances that perform a specific function in the body. There are two types of gland. Endocrine glands are ductless glands and release the substances that they make (hormones) directly into the bloodstream.

Answer:

A gland is an organ which produces and releases substances that perform a specific function in the body. There are two types of gland. Endocrine glands are ductless glands and release the substances that they make (hormones) directlyinto the bloodstream.

Explanation:

ASAP if you answer right I will mark brainiest

Answers

Answer:

I'm glad you asked!

Explanation:

1.Venus is the hottest planet in the solar system.

2.Opportunity explored Mars' surface.

3.Earth is the only planet in the solar system known to have plate Tectonics.

4.Mercury is one of the four planets closest to the Sun.

5.Mercury is the smallest of all planets in the solar system.

6.Messenger is a space aircraft that orbits and studies Mars.

7.Venus has the largest volcano in the solar system.

Adding oil to a car's engine reduces _____, which means less _____ is created by moving parts rubbing together.
A. friction; heat energy
B. heat energy; friction
C. friction; kinetic energy
D. heat energy; potential energy

Answers

Answer:

A.) friction, heat energy

Explanation:

Adding oil to something makes it slick, which in turn reduces friction, and When you reduce friction, you also reduce heat energy.

Answer:

The Answer is A: friction; heat energy

Other Questions
when nathan was 2 1/2 years old, he was 34 inches tall. the doctor told his mother that he will be two times and 4 inches taller than that when he is an adult. which of the following equation will give h, nathans height, as an adult Retail price data for n = 60 hard disk drives were recently reported in a computer magazine. Three variables were recorded for each hard disk drive: y = Retail PRICE (measured in dollars) x1 = Microprocessor SPEED (measured in megahertz) (Values in sample range from 10 to 40) x2 = CHIP size (measured in computer processing units) (Values in sample range from 286 to 486) A first-order regression model was fit to the data. Part of the printout follows: __________. The Earth's mantle isA. hotter than the crust but cooler than the core.B. hotter than both the crust and the core. C. cooler than both the crust and the core. D. cooler than the crust but hotter than the core. What is least likely to be considered a part of the context that a speaker mustconsider before giving a speech about unemployment?A. The audience the speaker is presenting toB. The topic of the speechC. The questions the audience might askD. The amount of research the speaker uses ProbabilityConsider the following set of numbers:{1,2,3,4,5,6,7,8,9,10)What is the probability of drawing an odd number or amultiple of 3?9/101/27/1003/5? 20 POINTS PLEASE ANSWER!! The total time T (in hours) needed to fly from New York to Los Angeles and back can be modeled by the equation below, where d is the distance (in miles) each way, a is the average speed (in miles per hour), and j is the average speed (in miles per hour) of the jet stream. Simplify the equation. Then find the total time to the nearest minute it takes to fly 2468 miles when a = 512 miles per hour and j = 103 miles per hour. You should meet with your academic adviser at least once a __________.Group of answer choices What do glands do for the body? Susan can read 72 words in One-third of a minute. Which statement is correct? Write a proper movie review about the movie P.S I still love you and dont add spoilers. Person to answer will get BRAINLIEST The article Effect of Environmental Factors on Steel Plate Corrosion Under Marine Immersion Conditions (C. Soares. Y. Garbatov, and A. Zayed, Corrosion Engineering, Science and Technology, 2011 :524? 541 ) describes an experiment in which nine steel specimens were submerged in seawater at various temperatures, and the corrosion rates were measured. The result are presented in the following table (obtained by digitizing a graph).Temperature (C) Corrosion (mm/y)26.6 1.5826.0 1.4527.4 1.1321.7 0.9614.9 0.9911.3 1.0515.0 0.82a. Construct a scatterplot of corrosion (y) versus temperature (x). Verify that a linear model is appropriate. b. Compute the least-squares line for predicting corrosion from temperature. c. Two steel specimens whose temperatures differ by 10 C are submerged in seawater. By how much would you predict their corrosion rates to differ? d. Predict the corrosion rate for steel submerged in seawater at a temperature of 20 C. Which answers describe something that took place during the "Pax Romana"? A) The Empire was ruled by the "Good Emperors." B) The Twelve Tables became the law of the land. C) Christians were often persecuted and punished for their faith. Eliminate D) Christianity became the official religion of the Roman Empire. E) Roman trade expanded to include exchanges with civilizations far to its east. what is the volume of this hemisphere? Exact answer in terms of the radius is 48 m options 1) 9,216 cubic meters 2) 18,432 cubic meters 3) 28,938 cubic meters 4) 57,876 cubic meters need help with this question its a mastery grade! What role did sacred beliefs play in the lives of thefirst Americans? How could the creation of the Zulu Kingdom be viewed as a form of anti-imperial resistance during the 1750-1900 time period. portugues me ajudem nao consegui colocar a tirinha Considerando essas caractersticas, o uso do pronome "eles", no terceiro quadrinho, A faz referncia a personagens que esto fora da histria. B indica um objeto que est distante de Calvin e do pai dele. C retoma um termo da fala de Calvin no primeiro quadrinho. D torna indefinida a realidade a que se refere o pai de Calvin. To encourage employee ownership of the company's common shares, KL Corp. permits any of its employees to buy shares directly from the company through payroll deduction. There are no brokerage fees and shares can be purchased at a 12% discount. During May, employees purchased 10,000 shares at a time when the market price of the shares on the New York Stock Exchange was $12 per share. KL will record compensation expense associated with the May purchases of: Approximately what percentage of Americans do not participate in the government process?a. 5-10%b. 15-20%C. 20-30%d. 30-45%Please select the best answer from the choices providedBCD