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Svetlanka [38]
2 years ago
9

What is velocity and power ?​

Physics
2 answers:
Kobotan [32]2 years ago
8 0

Explanation:

Velocity : Velocity is quickness of motion or action. A synonym is celerity; a simpler word is speed. In physics, velocity specifically refers to the measurement of the rate and direction of change in position of an object. It is a vector quantity that specifies both the speed of a body and its direction of motion.

Power : In physics, power is the amount of energy transferred or converted per unit time. In the International System of Units, the unit of power is the watt, equal to one joule per second. In older works, power is sometimes called activity. Power is a scalar quantity.

Hope it's helpful to you

natulia [17]2 years ago
8 0

I don't know

btw thanks for points

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A shopping cart given an initial velocity of 2.0 m/s undergoes a constant acceleration to a velocity of 13 m/s. What is the magn
olga55 [171]

Answer:

The acceleration is a = 2.75 [m/s^2]

Explanation:

In order to solve this problem we must use kinematics equations.

v_{f} = v_{i} + a*t\\

where:

Vf = final velocity = 13 [m/s]

Vi = initial velocity = 2 [m/s]

a = acceleration [m/s^2]

t = time = 4 [s]

Now replacing:

13 = 2 + (4*a)

(13 - 2) = 4*a

a = 2.75 [m/s^2]

5 0
3 years ago
In this activity, you will research how scientists developed historical
Darya [45]

Answer: Bohr's model (1913)

  Niels Bohr improved Rutherford's model. Using mathematical ideas, he showed that electrons occupy shells or energy levels around the nucleus. The Dalton model has changed over time because of the discovery of subatomic particles.

Bohr's model (1913)

  Niels Bohr improved Rutherford's model. Using mathematical ideas, he showed that electrons occupy shells or energy levels around the nucleus. The Dalton model has changed over time because of the discovery of subatomic particles

  Dalton's atomic theory proposed that all matter was composed of atoms, indivisible and indestructible building blocks. While all atoms of an element were identical, different elements had atoms of differing size and mass.

  John Dalton

The idea that everything is made of atoms was pioneered by John Dalton (1766-1844) in a book he published in 1808. He is sometimes called the "father" of atomic theory, but judging from this photo on the right "grandfather" might be a better term.

Explanation:

8 0
3 years ago
The electric current running through the wire coil in an electric motor exerts force directly onto A) the battery. B) an aluminu
antiseptic1488 [7]
<span>C)<span>a powerful magnet.

</span></span>
8 0
3 years ago
Read 2 more answers
Someone please help me answer these
nekit [7.7K]

1.  GPE

2. KE

3. KE

4. KE

5. Both

6. Both

7. Neither

8. Neither

Alright I think these should be right ;)

4 0
3 years ago
If potential energy at point A is 12 joules, what is the potential energy at D?
Irina-Kira [14]

Answer:

In D: 3J

Explanation:

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For point D: hd=5cm=0.05m

Epd=mg×0.05=60×0.05=3J

5 0
3 years ago
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