A trapeze artist performs an aerial maneuver. While in a tucked position, as shown in figure A, she rotates about her center of mass at a rate of 6.27 rad/s. Her moment of inertia about this axis is 17.9 kg⋅m2. A short time later, the aerialist is in the straight position, as shown in figure B. If the moment of inertia about her center of mass in this position is now 33.1 kg⋅m2, what is her rotational speed in revolutions per minute (rpm)?

Answer:

1.96 kg * m2/s2

Explanation:

I'm assuming that you are asking what is the elastic potential energy stored in the spring at the position stretched by 16.5 cm...

Since you know the spring constant k, 144 N/m and the spring stretch from the equilibrium position x, is 16.5 cm, or 0.165, you find the spring's potential energy from the equation PE = 12kx2, which equals 1.96 Joules, or kg * m2/s2 if you want SI units.

Answer:

1. Pumutok ang Lobo

2.basurahan

3.may kwentong po ba to paano ko masagot ng wala naman akong mababasang kwento :) :) :)

Mass = density x volume

Mass = 76 x 0.76 = 57.76

Answer: 57.76g/cm3

Answer:

5776

Explanation:

Answer:

[tex]{\tiny \tiny \: {\color{limegreen} \color {limegreen}{\tt \tt \tt \tt{✓\: \: Verified \: \: \: answer \: \:}}}} [/tex]

Answer:

this is 100% correct

Explanation:

All good if you have 4 questions.

1. Mass and Acceleration

2. Object C has an acceleration that is greater than the acceleration for D.

3. 17 m

4. The velocity is zero.

OR...if you have 5 questions...

1. Mass and Acceleration

2. 4.0

3. Object C has an acceleration that is greater than the acceleration for D.

4. 17 m

5. The velocity is zero.

Hope this helps!

Answer:

Explanation:

1.) Students are going to conduct an experiment to study the effect of a net force applied to an object on the object’s motion. In each trial of the experiment, the students will apply a net force on the object. They also need to take two other measurements. What are the other quantities they should measure in each trial of the experiment?

ANSWER: mass and acceleration

2.) Use the data table to answer the question. It shows the acceleration of a body when a net force is applied to it.

Net force (N) Mass (kg) Acceleration (m/s2)

5.0 5.0 1.0

10.0 5.0 2.0

20.0 5.0  

Which value would complete the last cell?

ANSWER: 4.0

3.) Which statement makes an accurate comparison of the motions for objects C and D?

ANSWER: Object C has an acceleration that is greater than the acceleration for D.

4.) Use the equation for motion to answer the question.

x=x0+v0t+12at2

An object has a starting position of 2 m, a starting velocity of 15 m/s, and is moving at a constant speed. Which option shows the final position of the object after 1 s?

ANSWER: 17 m

5.) The graph of an object's position over time is a horizontal line and y is not equal to 0. What must be true about the object's motion?

ANSWER: The velocity is zero.

hope this helps <3

As the graph shows, position over time is a horizontal line and y is not equal to 0 then the velocity is zero. Hence, option A is correct.

Acceleration is the rate at which the speed and orientation of a moving object change over time. When a spot or object moves faster or slower along a straight line, it is said to be accelerated. Even though the speed is constant, motion on a circle accelerates so because the direction is always shifting. Both by and to acceleration for all other types of motion.

It is a vector quantity because it has both magnitude and direction.

If the graph of an object's position over time is a horizontal line also y is not equal to 0 then it means that the velocity is zero, it cannot be constant or non-zero.

Therefore, it concludes that the velocity is zero and option A is correct.

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Answer:

How is hydrogen obtained and separated from other nearby substances?

photoelectrolysis, a photoelectrochemical cell submerged in water uses sunlight to separate the water into hydrogen and oxygen bubbles. In the thermochemical cycle, water is heated to 800 to 1,000 °C, with the molecule. splitting to release hydrogen. The main drawback of this method is that it requires nuclear power

How is Hydrogen used?

Hydrogen can be used in fuel cells to generate electricity, or power and heat. Today, hydrogen is most commonly used in petroleum refining and fertilizer production, while transportation and utilities are emerging markets

What products are made from Hydrogen?

Hydrogen is a very useful element. It is used to make ammonia for fertilizers, refining metals, and methanol for making artificial material like plastics. Hydrogen is also used as a rocket fuel where liquid hydrogen is combined with liquid oxygen to produce a powerful explosion.

Any environmental concerns about the use of Hydrogen?

Emissions of hydrogen lead to increased burdens of methane and ozone and hence to an increase in global warming. Therefore, hydrogen can be considered as an indirect greenhouse gas with the potential to increase global warming.

By applying Newton's Second Law of Motion, the force acting on the mass is 45.0 Newton.

Given the following data:

To determine the force acting on the mass in Newton, we would apply Newton's Second Law of Motion:

Newton's Second Law of Motion states that the acceleration of an object is directly proportional to the net force acting on the physical object or body, and inversely proportional to its mass.

Mathematically, Newton's Second Law of Motion is given by this formula;

[tex]Force = mass \times acceleration[/tex]

Substituting the given parameters into the formula, we have;

[tex]Force = 15.0 \times 3.0[/tex]

Force = 45.0 Newton

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This question involves the concepts of kinetic energy, and rms speed.

The rms speed of helium atom at 5800 K is "1.05 x 10¹⁵ m/s".

We will use the formula of the average kinetic energy of gas molecules to find out the rms speed of the hydrogen atom. rms speed is the root mean square speed of an atom:

[tex]K.E =\frac{1}{2}mv^2\\\\v=\sqrt{\frac{2K.E}{m}}[/tex]

where,

v =rms speed = ?

K.E = Kinetic Energy of Helium atoms = 3700 J

m = mass of hydrogen atom = 6.68 x 10⁻²⁷ kg

Therefore,

[tex]v=\sqrt{\frac{2(3700 J)}{6.68\ x\ 10^{-27}\ kg}}\\[/tex]

v = 1.05 x 10¹⁵ m/s

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Answer:

Well If the unknown is one of four possible compounds which melt at 102, 104, 106, and 108° C, it is most likely that which melts at 108° C. To summarize, an impure solid melts over a wide range and at a temperature lower than that of the pure solid.

Explanation:

I have known this since grade school

Answer:

5

Explanation:

searched it up

The more the number of locomotives in the train the greater the net force supplied to move the train forward.

A train is used for transportation on land. A train consists of a locomotive engine which provides the forward force which the train requires to move from place to place.

The more locomotives, the more power is provided to pull the train forward thereby providing a greater net force that moves the train in the forward direction.

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Answer:

Time to get a new fence...?

C'mon that's pretty cringe lol

Please give brainliest

have a nice day :D

Answer:

c

Explanation:

im sorry if im wrong

mark me as brainlist please thank you

Hi there!

To find the center of mass:

[tex]com = \frac{1}{m}\int\ {rdm}[/tex]

We can begin by changing "dm" into an available quantity by expressing the lineal density as a function:

[tex]\lambda = x^2 = \frac{m}{x}\\\\x^2 = \frac{m}{x}\\\\x^3 = m \\\\[/tex]

Differentiate both sides:

[tex]3x^2dx = dm[/tex]

Let:

[tex]r = f(x) = x^{3/2}[/tex]

Thus:

[tex]com = \frac{1}{m} \int x^{3/2}3x^2dx\\\\com = \frac{1}{m} \int }3x^{7/2}dx\\[/tex]

Evaluate:

[tex]com = \frac{1}{m} \frac{2}{3}x^{9/2}\left \| {{1 \atop {0}} \right.[/tex]

We found 'm' above, so plug the expression in:

[tex]com = \frac{1}{x^3} \frac{2}{3}x^{9/2}\left \| {{1 \atop {0}} \right. \\\\com = \frac{1}{x^3} \frac{2}{3}x^{9/2}\left \| {{1 \atop {0}} \right. \\\\com = \frac{2}{3}x^{3/2}\left \| {{1 \atop {0}} \right. = \boxed{\frac{2}{3}}[/tex]

pic attached !!

hope it helps!!

Answer:

False. It is typically very low at that point.

Explanation:

Answer:

theory of plate tectonics

Explanation:

Answer:

What he said above me

Explanation:

I did the test and it was right

Answer:PAST she studied

Present: she walks home, they leave the door open, I walked home, he made a list.

Future: It will open next week, she will walk home.

Explation:Its obvious

The ways to solve this problem is through knowledge dissemination, citizens who were outraged by the article about the negative statements and malicious stories about Filipinos, could submit positive articles about the culture of the Filipino people.

Another way could be through open dialogue, with Filipino internet users, publicly apologizing seeking to become more involved with the Filipino community.

Therefore, the best way to solve the problem is through ethically-based freedom of expression, avoiding stereotypes of a culture you don't belong to, and looking for a way to disseminate respectful and empathetic information about a people.

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Answer:

The velocity is 60 km/hr.

Explanation:

Displacement (d) = 480 km = 48000 m

Time (t) = 8 Hours = 480 minute

Velocity (v) = ?

Now,

Velocity = Displacement ÷ Time

v = d/t

v = 480/8

v = 60 km/hr

Thus, The velocity is 60 km/hr.

-TheUnknownScientist 72

Answer:

Transitions through geologic time among 3 rock types

Explanation:

Answer:

1. The rate at which work is completed

Explanation:

BALANCED FORCES

When two forces acting on an object are equal in size but act in opposite directions, we say that they are balanced forces . a stationary object stays still. ... a moving object continues to move at the same speed and in the same direction.

- BRAINLIEST answerer

The required answers are stated below:

13. The force acting on the mass can be calculated by:

Force = mass x gravitational field

          = 5.0 x 7.0

          = 35.0 N

The force acting is 35.0 N. Thus, option A.

14. When the location of the arrows become closer to the mass, the arrows would become shorter. Option A.

15. Kepler's first law of planetary motion is: Planets have elliptical orbits. Option B.

16. The correct option is A. Centrifugal force acting on the moon balances the force of the earth's gravity.

17. Considering the given options, all the objects have gravitational fields. Thus option D.

18. The Earth will generate the largest gravitational field. Option D.

19. When the distance between two objects decreases, the gravitational force between them increases. Option A. The gravitational force increases.

20. When the distance between two objects increases, the gravitational force between them decreases. Option B. The gravitational force decreases.

21. When the mass of two objects increases, the gravitational force between them increases. Option A. The gravitational force increases.

22. When the mass of two objects decreases, the gravitational force between them decreases. Option B. The gravitational force decreases.

23. Einstein discovered that: Gravity causes acceleration. Option D

24. The scientist from the given options that is not involved with gravitation is Curie. Option D.

25. Force field is a type of force that do not require contact before it can be felt. Gravitational force is a field force. Option A.

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Answer:

In order to reduce the mass of the bat and raise the mass of the ball, the transfer of momentum could only be extended to a distance equal to the size of a baseball stadium. Although the ball's acceleration stays constant regardless of its mass (provided that the mass is less than the mass of the moon), your running time around the bases will be reduced as a result of the increased mass of the ball.

Explanation:

Hope it helps:)

The angular speed of the ball as it swings through its lowest point is 1.8 rad/s.

The given parameters;

radius of the circular path, r = 2.5 m

angle with the vertical, θ = 35⁰

The angular speed of the ball, as it swings through its lowest point is calculated as follows;

[tex]Tcos \theta = m\omega ^2 r\\\\mgcos \theta = m \omega ^2 r\\\\gcos \theta = \omega ^2 r\\\\\omega ^2 = \frac{gcos \theta }{r} \\\\\omega = \sqrt{\frac{gcos \theta }{r} } \\\\\omega = \sqrt{\frac{9.8 \times cos (35) }{2.5} } \\\\\omega = 1.8 \ rad/s[/tex]

Thus, the angular speed of the ball as it swings through its lowest point is 1.8 rad/s.

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If two different quantities are given, how to check whether the relationship between them is proportional ? We have to get ratio of the two quantities for all the given values. If all the ratios are equal, then the relationship is proportional. If all the ratios are not equal, then the relationship is not proportional.