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4 years ago

Each value measured in nature has a number value, called its magnitude, and a dimension, or ______.

Physics

1 answer:

Musya8 [376]4 years ago

3 0

Answer:

Each value measured in nature has a number value, called its magnitude, and a dimension, or unit.

Explanation:

Measurement is a basic process of science that is based on comparing a selected unit of measure with the object or phenomenon whose physical magnitude you want to measure, to find out how many times the unit is contained in that magnitude.

Therefore, each value measured in nature has a number value, called its magnitude, and a dimension, or unit.

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How many electrons does a neutral atom of sudium-25 have

horrorfan [7]

Answer:

Option A. 11

Explanation:

The atomic number of an element does not change.

Recall:

Atomic number = proton number

If the atom is neutral, then,

Proton number = electron number

Since the element is sodium, then, the atomic number of sodium–25 is 11.

Also, we were told to obtain the electrons of a neutral atom of sodium–25

Therefore,

Atomic number = proton number = 11

Since the atom is neutral,

Proton number = electron number = 11

8 0

3 years ago

A circular coil of radius 5.0 cm and resistance 0.20 Ω is placed in a uniform magnetic field perpendicular to the plane of the c

DedPeter [7]

Answer:

The induced current in the coil at the time 2 s is 0.00263 A

Explanation:

The equation for induced emf is equal to:

$\epsilon =-\frac{d}{dt} (BAcos\theta )$

Where

B = magnetic field

A = area

θ = angle

$\epsilon =-Acos0\frac{d}{dt} B\\\epsilon =-(\pi r^{2} )\frac{d}{dt} (0.5e^{-0.2t} )\\\epsilon =0.1 (\pi r^{2} )e^{-0.2t}$

For t = 2 s

$\epsilon =0.1*\pi *0.05^{2} *e^{-0.2*2} =5.26x10^{-4} V$

The induced current is:

$I=\frac{\epsilo }{R} =\frac{5.26x10^{-4} }{0.2} =0.00263A$

3 0

3 years ago

A motorcycle of 170 kg is moving with a velocity 25m/ . Calculate the kinetic energy

topjm [15]

Answer: 53125joules

Explanation: The formula for kinetic energy is 1/2mv^2.

So we would have

1/2[(170)(25x25)]=53125

3 0

3 years ago

The resulting net force of an object is represented below. →10 N Which most likely represent the forces acting on the object?

kobusy [5.1K]

a friction force 10 N less than the applied force, a normal force equal to the gravtiational force

4 0

3 years ago

Read 2 more answers

What do you guys know about emotional intelligence? And how is it used in the real world?

tester [92]

Emotional Intelligence is our own abilities of being able to identify and regulate our own emotions. This is used by individuals in the real world in order to regulate crying in front of everyone for example. Calming ourselves down by breathing is another good example of regulating emotion which plays into emotional intelligence.

Hope this helps mate :D

7 0

3 years ago