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4 years ago

Since velocity describes both speed and direction you can call it

1 answer:

4 0

Since velocity describes both speed and direction, you can call it a "vector" quantity, and legitimately label it "velocity".

Since speed has no direction, it's a scalar quantity, and it's wrong to call it "velocity" as so many often do.

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1. An electric current of 0.028 A flows through a vacuum tube. What is

OLga [1]

Answer:

2.1 column, 1.31×10^19 electrons

Explanation:

Now Charge, Q = current × time

=0.028×75=2.1columb

2. Now the charge of 1 electron is 1.6×10^-19C

Hence for 2.1 C, the number of electron is;

2.1/1.6×10^-19 = 1.31×10^19 electrons

3 0

3 years ago

When a particle of charge q moves with a velocity v⃗ in a magnetic field B⃗ , the particle is acted upon by a force F⃗ exerted b

melomori [17]

Answer:

$3.8\cdot 10^{-16}N$

Explanation:

For a charged particle moving perpendicularly to a magnetic field, the magnitude of the force exerted on the particle is:

$F=qvB$

where

q is the magnitude of the charge of the particle

v is the velocity of the particle

B is the magnetic field strength

In this problem, we have

$q=e=1.6\cdot 10^{-19}$ is the charge of the electron

$v=6.0\cdot 10^6 m/s$ is the velocity

$B=4.0\cdot 10^{-4}T$ is the magnetic field

Substituting into the formula, we find the force:

$F=(1.6\cdot 10^{-19} C)(6.0\cdot 10^6 m/s)(4.0\cdot 10^{-4}T)=3.8\cdot 10^{-16}N$

8 0

4 years ago

Which location, 23 degrees or 48 degrees would experience the same earthquake at stronger intensity?Explain why.

BaLLatris [955]

Answer:

48 degress

Explanation:

An earthquake causes many different intensities of shaking in the area of the epicenter where it occurs. So the intensity of an earthquake will vary depending on where you are. Sometimes earthquakes are referred to by the maximum intensity they produce. In the United States, we use the Modified Mercalli Scale. Earthquake intensity is a ranking based on the observed effects of an earthquake in each particular place. Therefore, each earthquake produces a range of intensity values, ranging from highest in the epicenter area to zero at a distance from the epicenter.

6 0

3 years ago

Which of the following is a scalar quantity?

raketka [301]

A scalar quantity is one in which there is no direction given.

30 Lbs would be the answer, since there is no indicator of direction.

5 0

3 years ago

What’s the stored energy related to positions of atoms within molecules

zepelin [54]

Cheimcal engery is related to positions of atoms within molecules..

8 0

4 years ago