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3 years ago

Which statement is true? *

Physics

2 answers:

never [62]3 years ago

6 0

The last paragraph is the correct statement. Please don't make me type it all out.

soldi70 [24.7K]3 years ago

4 0

the last one is the correct answer, i took the test

In a series circuit, the current stays the same throughout the wiring and the brightness changes when adding more light bulbs. In a parallel circuit, the current changes throughout and the brightness of the light bulbs stays the same when more are added.

hope this helps

You might be interested in

How do carbon 12 and carbon 13 differ?

astraxan [27]

Answer:

A) & B)

Explanation:

First, the numbers 12 and 13 represent the atomic mass number of the atoms.

So, A) is true: thus Carbon12 and Carbon 13 have different mass numbers.

The mass number is equal to the total number of protons and neutrons. Consider that any element has the same number of protons, regardless of the number of neutrons. The number of protons in Carbon is 6.

The amount of neutrons can be calculated by: mass number minus number of protons.

For Carbon 12: $12-6=6$

For Carbon 13: $13-6=7$

B) is true, we just proved they have different amounts of neutrons.

In order for the charge of the atom to be neutral, the amount of electrons must be equal to the number of protons (as they have opposite charges). And we now know that the number of protons in Carbon12 and Carbon13 are always the same

C) is false, the number of electrons is the same in both atoms

The atomic charges in both are neutral, due to the fact that they have the same amount of protons and electrons in both cases. Is only the neutrons (thus the mass numbers)that change

D) is false, they have equal atomic charges

4 0

3 years ago

If a team pulls with a combined force of 4 newtons on an airplace with a mass of 36 kilograms,what is the acceleration of the ai

MatroZZZ [7]

Heya!!

For calculate aceleration, lets applicate second law of Newton:

$\boxed{F=ma}$

Δ Being Δ

F = Force = 4 N

m = mass = 36 kg

a = Aceleration = ?

⇒ Let's replace according the formula:

$\boxed{4\ N = 36\ kg * \textbf{a}}$

⇒ Clear acceleration and resolve it:

$\boxed{\textbf{a}=0,111\ m/s^{2}}}$

Result:

The aceleration is of 0,111 meters per second squared (m/s²)

Good Luck!!

5 0

3 years ago

How does water flowing over a waterfall involve both kinetic energy and potential energy?

Vinvika [58]

Answer:

While the water falls v increases and h decreases, so the kinetic energy increases and the gravitational potential energy decreases, and this happens in a way that the total energy is always the same. (If there is no friction)

Explanation:

7 0

3 years ago

Read 2 more answers

Two parallel plates have equal and opposite charges. When the space between the plates is evacuated, the electric field is E= 3.

svetlana [45]

Explanation:

The given data is as follows.

Electric field between plates without dielectric, $E_{1} = 3.50 \times 10^{5} V/m$