A car traveling at 37 m/s starts to decelerate steadily. It comes to a complete stop in 6 seconds.what is its acceleration? m/s

Answers

Answer 1

Answer: Magnitude of acceleration = (change in speed) / (time for the change)

= (end speed - start speed) / (time for the change)

= (0 - 37 m/s) / (6 sec)

= ( - 37 / 6) (m/s²)

= - 6-1/6 m/s²

= -6.1667 m/s² (rounded)

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How many electrons make up a charge of 3.5kC?

Answers

21.8452851 * 10^21 e. Which is 21.845.285.100.000.000.000.000 electrons. A lot.

Well now, I don't know !
Let's figure it out.

The charge on one electron is 1.60 x 10⁻¹⁹ Coulomb .

To get 3,500 Coulombs of charge, you'd need to
go around and collect

   (3,500) / (1.60 x 10⁻¹⁹) electrons.

That's 2.19 x 10²² of the little fellas.

That's a big number. But what's REALLY amazing is the
mass and weight of that many electrons:

   Mass: 1.989 x 10⁻⁵ gram

   Weight: about 0.0000007 ounce !

That's not one electron. That's the whole 2.19 x 10²² uvvum
that it takes to hold 3,500 Coulombs of charge.

Matter behaving like a wave rather than like a particle is best illustrated by which phenomenon?

Answers

The photoelectric effect is about electrons being ejected from metals when light is shined on metals. The electrons do not behave like waves in the photoelectric effect. Black body radiation is all about the radiation emitted by warm bodies and not about those bodies behaving like waves. The emission spectra of atoms is all about what light is given off by atoms when electrons in those atoms jump down to lower energy levels from higher levels. That also has nothing to do with matter behaving as a wave. Interference is classically defined as the generation of a new wave with an amplitude modulated according to the waves that interfere to form that new wave. Note its emphasis on the wave part.

PLEASE HELP!! ILL MARK BRAINLYEST!!New substances are produced in a chemical change.

True
False

Answers

The Answer is true hope this helps

The scientific unit of force is the _________.a. watt
b. joule
c. newton
d. kilogram

Answers

The correct answer is C

Answer:

The correct answer is c

Explanation:

How many 176 ohm resistors are connected in series to get a current of 5 a on 220 v battey

Answers

Total resistance = voltage / current = 220 / 5 = 44 ohms .

Even one 176-ohm resistor is too much. The current through it is 1.25 A,
and more than one of them in series reduces the current even further.

Connecting them in parallel, however . . .

Four resistors of 176-ohms each, in parallel, have a net effective resistance
of 176/4 = 44 ohms ... exactly what you need to do the job.

In a oxidation-reduction reaction, the oxidizing agent always undergoes reduction. a. True
b. False

Answers

Answer: True

Explanation:

A chemical reaction in which the oxidation number of an atom, ion or molecule changes due transfer of electrons between two reactants is known as oxidation-reduction reaction or redox reaction. In Redox reaction, the oxidising agent brings oxidation by gaining electrons and reducing it self.

Example:

Zn + Cu²⁺ → Zn²⁺ + Cu

Here, Cu²⁺ is an oxidizing agent which got reduced to Cu .

Thus, the given statement is true.

Final answer:

It's true that in an oxidation-reduction reaction, the oxidizing agent always undergoes reduction. The oxidizing agent is a substance that is capable of oxidizing other substances, meaning it causes them to lose electrons. By taking these electrons, the oxidizing agent itself is reduced.

Explanation:

In an oxidation-reduction reaction, also known as a redox reaction, the statement that the oxidizing agent always undergoes reduction is indeed true. The oxidizing agent is a substance that has the ability to oxidize other substances, meaning it causes them to lose electrons. In taking these electrons, the oxidizing agent itself is reduced. This is due to the principle that in a redox reaction, when one substance is oxidized (loses electrons), another substance must be reduced (gain electrons).

Learn more about Oxidation-Reduction Reaction here:

brainly.com/question/32432875

#SPJ6

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In the human circulatory system, arteries carry blood away from the heart to different parts of the body. Veins carry blood from different parts of the body back to the heart. A scientist claims that the greater the amount of exercise a person performs, the greater the amount of oxygen (O2) the body uses. He records the oxygen concentration in the blood of people while they are riding an exercise bike. The graphs show the results of this investigation.a. Identify at least two systems within the human body that work together during exercise.b. Explain how the evidence from the data in the graphs supports or does not support the scientist’s claim.