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tiny-mole [99]
3 years ago
11

Is 45 m/s2 a scalar or a vector quantity and how do you know?

Physics
1 answer:
Umnica [9.8K]3 years ago
5 0

Answer:

Explanation:

it is a vector as it has a magnitude and a direction. If it was a scalar quantity it would just have a magnitude and would be 45 m. Acceleration is an example of a vector quantity

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How many different types of plant and animal life exist in a given habitat.
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3 years ago
Copernicus patterned his concept of the solar system after that of
Rasek [7]

Answer:

Aristarchus

Explanation:

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3 0
2 years ago
State ohm’s law Q.34.7
defon

Ohm's law states that: V=RI

Explanation:

Ohm's law states that in a conductor, the potential difference across the conductor is directly proportional to the current flowing through it. Mathematically,

V \propto I

where

V is the potential difference

I is the current

The constant of proportionality is called resistance (R), and it gives a measure of "how much the conductor opposes" to the flow of current. Therefore Ohm's law can be rewritten as

V=RI

where R is the resistance. By rewriting the equation as

I=\frac{V}{R}

we see that the larger the resistance, the lower the current in the conductor.

Learn more about Ohm's law:

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4 0
3 years ago
how many revolutions are completed by a top spinning with a constant angular velocity of 3pi radians during a 20 sec time interv
patriot [66]

Answer:

  30

Explanation:

Assuming the velocity is 3π radians <em>per second</em>, the top will spin through an angle of ...

  (3π radians/s)(20 s) = 60π radians

Since each revolution is 2π radians, that is ...

  (60π radians)/(2π radians/revolution) = 30 revolutions

7 0
3 years ago
A person is pushing a box. The net external force on the 60-kg box is stated to be 90 N. If the force of friction opposing the m
Tems11 [23]

Answer:

b.1.5m/s^2

Explanation:

We are given that

Mass of box=60kg

Net external force applied on the box=90 N

Friction force =30N

We have to find the acceleration of the box.

We know that

Net external force=ma

Substitute the values then we get

90=60a

a=\frac{90}{60}=1.5m/s^2

Hence, option b is true.

5 0
2 years ago
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