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4 years ago

How far does a wave travel in three cycles?

Physics

1 answer:

eduard4 years ago

6 0

It will be 3 wavelengths because 1 cycle = 1 wavelength.

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What is your average velocity if you drive a distance of 113 km at a speed of 47 km/h, then the same distance at a speed of 66 k

Sauron [17]

Answer:

$V_{avg}=54.90\ km/h$

Explanation:

Given that

Drive 113 km at 47 km/h and another 113 km at 66 km/h.

When distance is same then average velocity can be found by using below formula:

$V_{avg}=\dfrac{2V_1V_2}{V_1+V_2}$

Here

$V_1= 47\ km/h$

$V_2= 66\ km/h$

Now by putting the values

$V_{avg}=\dfrac{2V_1V_2}{V_1+V_2}$

$V_{avg}=\dfrac{2\times 47\times 66}{47+66}$

$V_{avg}=54.90\ km/h$

8 0

4 years ago

Read 2 more answers

If the speed of light in air is 3.00 times 10 to the 8 m/s power and the speed of light in water is 2.25 times 10 to the 8 power

kykrilka [37]

The refractive index is essentially the speed of light through a vacuum (extremely similar to air) divided by the speed of light through given medium.
I also attached some of my physics notes on refraction and that sort of jazz as they may help :)

5 0

3 years ago

Draw on a piece of paper the uniform magnetic field directed out of a page, it means towards you. Magnetic field is uniform in s

Papessa [141]

Answer:

A. Counterclockwise

Explanation:

Electric fields can be created in vacuum space by variable magnetic fields. If we focus in the Lenz's law we have

$\int Edl=-\frac{d\Phi_{B}}{dt}$

and by taking into account the right hand rule we deduce the direction of the circulation of the field

I hope this is useful for you

regards

3 0

3 years ago

What’s the answer? Will give brainliest

Allushta [10]

The two nuclei are Krypton-89 and Barium- 144

Explanation:

The splitting nuclei is a Uranium-235:

mass number = 235

atomic number = 92

We can write the atom as ²³⁵₉₂U

From the key, a neutron particle collides with the Uranium nuclei. The neutron is represented as:

¹₀n

Writing the expression on the left hand side:

²³⁵₉₂U + ¹₀n

In a fission reaction, a heavy nucleus disintegrates into 2 lighter nuclei and several neutrons with the release of a large amount of energy.

NOTE: In every nuclear reaction, the mass number and atomic number is always conserved.

Problem: To find the unknown nuclei on the right hand side;

Known:

3 neutrons;

²³⁵₉₂U + ¹₀n → 3 ¹₀n + unknown nuclei

To balance the product side,

mass number = (235+1) - (3x1) = 233

Atomic number = 92 -3 = 89

from the options given, Krypton and plutonium will fit this:

Given information of Kr:

atomic number = 36

neutron number = 53

Mass number = atomic number + neutron number = 89

Given information of Ba:

atomic number = 56

neutron number = 88

mass number = 56+88 = 144

Complete equation:

²³⁵₉₂U + ¹₀n → 3 ¹₀n + ¹⁴⁴₅₆Ba + ⁸⁹₃₆Kr

Learn more:

nuclear equation brainly.com/question/10094982

#learnwithBrainly

5 0

3 years ago

What is the speed of a 500 kg elevator that has 4000 J of energy ?

malfutka [58]

Energy =sxm
S =4000/500
=Answer

8 0

3 years ago