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AnnyKZ [126]
3 years ago
14

Which of the following is the correct definition of mechanical energy? A. energy stored in chemical bonds of molecules B. energy

an object has because of its motion or position C. energy of an object due to the random motion of its atoms and molecules D. energy resulting from the flow of charged particles, such as electrons or ions
Physics
2 answers:
Alex787 [66]3 years ago
6 0

The correct answer is B. Energy an object has because of its motion or position

Explanation:

In physics, the mechanical energy of a body or object is determined by the position and/or motion. Due to this, the mechanical energy includes both the kinetic energy (energy during movement) and the potential energy (energy according to location or stored energy). Additionally, the mechanical energy as other types of energy is constant if no forces are acting over it in an ideal system, but in reality, this type of energy is influenced by external forces, for example, friction. Thus, the correct definition of mechanical energy is " Energy an object has because of its motion or position".

Lubov Fominskaja [6]3 years ago
5 0

Which of the following is the correct definition of mechanical energy?

B. energy an object has because of its motion or position

Hope this answers your question!

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At a 1500 m race, Ken ran at an average speed of 200 m/min. How long did it take for Ken to finish the race? (meter = m, minute
Anettt [7]

speed =  \frac{distance}{time}  \\   =  > \frac{200m}{min}  =  \frac{1500m}{t}  \\  =  >  \frac{200m}{60s}  = \frac{1500m}{t} \\  =  >  \frac{10m}{3s}  = \frac{1500m}{t} \\  =  > t = 1500m \times  \frac{3s}{10m}  \\  =  > t = 150 \times 3s \\  =  > t = 450s \:

This is the answer.

Hope it helps!!

3 0
3 years ago
A proton experiences a force of 4 Newton when it enters perpendicular to the direction of the magnetic field with a speed 100 m/
____ [38]

Answer:

F = 0 N

Explanation:

Force on a moving charge in constant magnetic field is given by the formula

F = q(\vec v\times \vec B)

so here it depends on the speed of charge, magnetic field and the angle between velocity of charge and the magnetic field

here when charge is moving with speed 100 m/s in a given magnetic field then the force on the charge is given as

F = 4 N

now when charge is moving parallel to the magnetic field with different speed then in that case

\vec v \time \vec B = 0

so here we have

F = 0

7 0
3 years ago
What is the approximate distance from the center of the milky way galaxy to the sun? select one:
ycow [4]
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4 0
3 years ago
Describe how newtons third law is related to fluid pressure.
Hatshy [7]
Fish swimming forward in the water, the water gets pushed backward because the fish moving forward is forcing the water to move backward, the motion forward and backward are the same, they are opposite and equal.
3 0
4 years ago
A ball was rolling downhill at 2 m/s. After 5s, it was rolling at 90 m/s. What is its acceleration?
olga55 [171]

Answer:

17.6 m/s²

Explanation:

Given:

v_{f} = 90 m/s (final velocity)

v_{i} = 2 m/s (initial velocity)

Δt = 5s (change in time)

The formula for acceleration is:

a_{avg} = Δv / Δt

We can find Δv by doing

Δv = v_{f} - v_{i}

Replace the values

Δv = 90m/s - 2m/s

Δv= 88m/s

Using the equation from earlier, we can find the acceleration by dividing the average velocity by time.

a_{avg} = Δv / Δt

a_{avg} = \frac{88m/s}{5/s}

acceleration = 17.6 m/s^{2}

4 0
3 years ago
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