3 years ago

Which of these is a scalar quantity?

Physics

2 answers:

USPshnik [31]3 years ago

6 0

Answer:

It would be C because quantity means numbers

Anna007 [38]3 years ago

3 0

Answer:

Explanation:

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A whole sentence includes a subject and a predicate

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The magnetic field of a bar magnet is the strongest ___.

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A neutral wire without current flowing creates A.) an electric field. B.) a magnetic field. C.) both an electric field and magne

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An irregular object of mass 3 kg rotates about an axis, about which it has a radius of gyration of 0.2 m, with an angular accele

Citrus2011 [14]

Answer:

The magnitude of the applied torque is $6.0\times10^{-2}\ N-m$

(e) is correct option.

Explanation:

Given that,

Mass of object = 3 kg

Radius of gyration = 0.2 m

Angular acceleration = 0.5 rad/s²

We need to calculate the applied torque

Using formula of torque

$\tau=I\times\alpha$

Here, I = mk²

$\tau=mk^2\times\alpha$

Put the value into the formula

$\tau=3\times(0.2)^2\times0.5$

$\tau=0.06\ N-m$

$\tau=6.0\times10^{-2}\ N-m$

Hence, The magnitude of the applied torque is $6.0\times10^{-2}\ N-m$

7 0

4 years ago

If a storm is 7. 5 kilometers away, how much time is expected between observations of lightning and thunder? Round your answer t

Rashid [163]

The expected time period between the observations of lightning and thunder would be 22.5 s.

How to calculate the time of sound waves?

The time taken by sound to reach a certain position can be calculated by the speed formula,

$S = \dfrac dt$

Where,

$S$ - speed = 0.343 km/s

$d$ - distance = 7.5 km

$t$ - time = ?

Put the values in the formula,

$0.343 = \dfrac {7.5} t\\\\t = \dfrac {0.343}{7.5}\\\\t = 22.5$

Therefore, the expected time period between the observations of lightning and thunder would be 22.5 s.

Learn more about the expected time:

brainly.com/question/16851276

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3 years ago