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Zigmanuir [339]
3 years ago
13

Which of the following is a vector quantity?

Physics
1 answer:
SVEN [57.7K]3 years ago
7 0
<span>a.displacement. A vector quantity has both magnitude and direction. Displacement tells you the magnitude of the distance traveled as well as the direction of the distance.</span>
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John’s car travels a distance from A to B at a speed of 50 km/h for two hours as from B to C at a speed of 40 km/h for two hours
Blababa [14]

Please find attached photograph for your answer. Hope it helps. Please do comment.

7 0
3 years ago
What do all atoms of the same element have in common?
xz_007 [3.2K]

What do all atoms of the same element have in common?

А. atomic mass

B. mass number

C. number of neutrons

<u>D. atomic number</u>

3 0
3 years ago
4. Describe how the velocity of an object changes if it undergoes uniformly acceleration motion. Can its direction change?
valentinak56 [21]

Answer:

n the case of linear motion, the change occurs in the magnitude of the velocity, the direction remaining constant.

In the case of circular motion, the magnitude of the velocity remains constant, the change in its direction occurring.

Explanation:

Velocity is a vector therefore it has magnitude and direction, a change in either of the two is the consequence of an acceleration on the system.

In the case of linear motion, the change occurs in the magnitude of the velocity, the direction remaining constant.

              a_{t} = (v₂-v₁)/Δt

In the case of circular motion, the magnitude of the velocity remains constant, the change in its direction occurring.

                    a_{c} = v2/R

In the general case, both the module and the address change

             a = Ra (  a_{t}^2 +   a_{c}^2)  

4 0
3 years ago
Which two factors does the power of a machine depend on?
sergey [27]

THE ANSWER IS C......

7 0
4 years ago
The hydrogen atom, changing from its first excited state to its lowest energy state, emits light with a wavelength of 122 nm. Th
tatyana61 [14]

Answer:

true b and c

Explanation:

n the electromechanical transitions of the atoms the relationship must be fulfilled

        \frac{x}{\lambda } = R (1 / nf - 1 / no²)

where for the final state nf = 1 giving in the case of hydrogen the Lymma series whose smallest wavelength is lam = 122 nm with nf = 1 and there are a series of spectral lines for each value of n of the final state

in the case of sodium so well it has a transition from an excited state to the kiss state (bad)

Now let's review the different proposals

a) False. The electronic potential for sodium is much lower than for hydrognosia

b) True

c) True

d) true

8 0
3 years ago
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