PHYSICS MIDDLE SCHOOL

Tyson throws a shot put ball weighing 7.26 kg. At a height of 2.1 m above the ground, the mechanical energy of the ball is 172.1 J. What is the velocity of the ball at the given point? m/s

Answers

Answer 1
Answer:

Answer:

2.5 m/s

Explanation:

Mechanical energy is the sum of the potential and kinetic energy.

E = PE + KE

E = mgh + ½mv²

172.1 J = (7.26 kg) (9.8 m/s²) (2.1 m) + ½ (7.26 kg) v²

v = 2.5 m/s
Answer 2
Answer:

Answer:

2.5 m/s

Explanation: i jus did this on edg. its right:)

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Need help in General Science II please help FAST!!!!!!!!!!!!!!!!!!The pH scale for acids and bases ranges from _____.
1-7
0-14
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1-12

Automobile batteries contain _____.

sulfuric acid
hydrochloric acid
acetic acid
carbonic acid

Some acids are capable of drawing water out of an object. This process is called _____.

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Any atom which no longer has a neutral charge is called a(n) _______ .

atomic or ion

Answers

Hey~ :) So, For the first one...  
1. A pH scale measures how much acidic or basic a substance is. The pH scale usually ranges from 0 to 14. .... The pH scale would be, (0 - 14), I think. SO the second one for 1. :) 

2. So, Since an automobile battery can explode or contain and cause a sulfuric acid burn. I'm thinking it would be thee 1st one for the 2nd! :) sulfuric acid

3. Electrochemical and electrolytic reduction cleaning processes, so.... they are the most common techniques utilized to halt, stabilize, and even reverse the oxidation of the metal. So Overall I think this would most-likely Be electrolysis. 

4. Is 1, because, pH of 1 (e) 

5.I am thinking this would Be ion. Because, an ion is an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

HOPE IT HELPS!!!! :)

How do simple machines make work easier? A.
They add energy to the work.

B.
They increase the force needed to work.

C.
They reduce the speed of work.

D.
They increase the distance over which a force is applied.
C.?

Answers

Answer:  D.  They increase the distance over which a force is applied.

Explanation:

Simple machines are basic mechanical devices which make our work easier like lever, pulley, wheel and axle, inclined plane, wedge and screw. The magnitude of the force or direction is altered using a simple machine. They increase the distance over which a force is applied. They use mechanical advantage to increase the magnitude of the force.

It is A: They add energy to the work

l o which of the following can move from one atom to another A. protons Msideus. B. neutrons C. electrons the nucleus

Answers

Electrons can move from one atom to another. 

When a lot of them are doing it at the same time,
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We asked around here at Brainly, and nobody knows
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Explain what wave frequency is...

Answers

Wave frequency is the number of waves that pass a fixed point in a given amount of time.

Explanation:

Wave frequency is the number of waves that pass a fixed point in a given amount of time. The SI unit for wave frequency is the hertz (Hz), where 1 hertz equals 1 wave passing a fixed point in 1 second. A higher-frequency wave has more energy than a lower-frequency wave with the same amplitude.

during a space shuttle launch about 830,000 kg of fuel is burned in 8 min. the fuel provides the shuttle with a constant thrust, or forward force. how does newton's second law of motion explain why the shuttle's acceleration in creases as the fuel is burned?

Answers

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Because the direction is always shifting, motion on a circle accelerates even while the speed is constant.

A speed is acceleration, right?

Acceleration is the term used to describe a change in an object's speed or direction. Velocity changes at an acceleration rate. Recall that velocity consists of two elements: speed and direction.

To know more about Acceleration, visit-brainly.com/question/2303856

#SPJ2
The shuttles acceleration in the creases as the fuel is burned because the acceleration of the obect as produced by net force is directly proportional to the magnitude of the net force.

For the definition of Observation, What question can I ask based on the definition?

Answers

How would one use their senses to gather information to help answer a hypothesis?
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