1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Charra [1.4K]
4 years ago
7

What is the frequency of a wave that passes a given point 22 times in 2.0 seconds? A. 44 Hz B. 11 Hz C. 0.091 s D. 24 s

Physics
2 answers:
FrozenT [24]4 years ago
8 0
The answer is B. 11 Hz. 

Frequency is always measured in Hertz (Hz), so it can't be C. or D. anyway, but the way to work this out is to do 22 ÷ 2 to work out 11 Hz, because you work out frequency as per second. Also, the formula is f (frequency) = <span>V (velocity) / λ (wavelength). </span>
umka21 [38]4 years ago
6 0
F= (22 cycles)/ 2.0 seconds = 11Hz
You might be interested in
Explain the difference between the 7 parts of the electromagnetic spectrum.
inn [45]

Answer:

The difference between the two is, well for one

Spectrum: The entire range that the "waves" could be such, as visible light, x-ray's and so on.

Waves: These are different because they aren't telling you or showing the entire spectrum just which they length that they are.

It may confuse you but it makes sense to me (Sorry)

Explanation:

3 0
3 years ago
A car slows from 27 m/s to 5 m/s with a constant acceleration for 6.87 s. What is the car’s acceleration?
Kobotan [32]

In this case, the movement is uniformly delayed (the final rapidity is less than the initial rapidity), therefore, the value of the acceleration will be negative.

1. The following equation is used:

a = (Vf-Vo)/ t

a: acceleration (m/s2)

Vf: final rapidity (m/s)

Vo: initial rapidity (m/s)

t: time (s)

2. Substituting the values in the equation:

a = (5 m/s- 27 m/s)/6.87 s

3. The car's acceleration is:

a= -3.20 m/ s<span>^2</span>

5 0
3 years ago
Using 0.500 g of nichrome, you are asked to fabricate a wire with uniform cross-section. The resistance of the wire is 0.673 Ω.
mojhsa [17]

Explanation:

Given that,

Mass of Nichrome, m = 0.5 g

The resistance of the wire, R = 0.673 ohms

Resistivity of the nichrome wire, \rho=10^{-6}\ \Omega -m

Density, d=8.31\times 10^3\ kg/m^3

(A) The length of the wire is given by using the definition of resistance as :

Volume,

V=A\times l\\\\A=\dfrac{V}{l}\\\\Since, V=\dfrac{m}{d}\\\\V=\dfrac{m}{d}\\\\V=\dfrac{0.5\times 10^{-3}}{8.31\times 10^3}\\\\V=6.01\times 10^{-8}\ m^3

Area,

A=\dfrac{V}{l}\\\\A=\dfrac{6.01\times 10^{-8}}{l}....(1)

R=\rho \dfrac{l}{A}\\\\l=\dfrac{RA}{\rho}\\\\l=\dfrac{0.673\times 6.01\times 10^{-8}}{l\times 10^{-6}}\\\\l=0.201\ m

(b)  Equation (1) becomes :

A=\dfrac{6.01\times 10^{-8}}{l}\\\\A=\dfrac{6.01\times 10^{-8}}{0.201}\\\\\pi r^2=3\times 10^{-7}\\\\r=\sqrt{\dfrac{3\times 10^{-7}}{\pi}} \\\\r=3.09\times 10^{-4}\ m

Hence, this is the required solution.                                                                  

5 0
4 years ago
Which explicit definition matches this sequence? an={10,if n=1an−1−4,if n&gt;1 A. an = 10 + 4(n – 1) B. an = 10 – 4(n – 1) C. an
Step2247 [10]

Answer:

Añ=10+4(n-1)

Explanation:

3 0
3 years ago
Describe What It Was Like Before The Big Bang. Vision It In Your Head.
Inessa05 [86]
That's a loaded question. Well to me, through what I have heard from others and theories, I imagine there was other universes before us. It wasn't just nothingness, there was another universe, perhaps in another dimension that either ended or is still around today. Alternate dimensions are a theory, so it was probably just a matter of when ours would be born. We could've been the result of reaching the singularity in a black hole or we could've been the continuation of a grand generation of universes. Either way, I think before us there was other things that filled the void of darkness that we imagine to be before us.
8 0
4 years ago
Other questions:
  • The focal length of the lens of a simple digital camera is 40 mm, and it is originally focused on a person 25 m away. In what di
    6·1 answer
  • According to accepted atomic models metals are good conductors because their?
    14·1 answer
  • The force required to compress a non-standard spring as a function of displacement from equilibrium x is given by the equation f
    13·1 answer
  • How does the molecular structure of a water molecule affect its polarity?
    5·2 answers
  • What linear speed must an earth satellite have to be in a circular orbit at an altitude of 159 km?
    6·1 answer
  • The Law of Reflection states that the Angle of Incidence will always be
    9·1 answer
  • An electron is released from rest at a distance of 6.00 cm from a proton. If the proton is held in place, how fast will the elec
    5·1 answer
  • The time between a lightning flash and the following thunderclap may be used to estimate, in kilometers, how far away a storm is
    7·1 answer
  • Which of the following is a resistor?
    5·2 answers
  • Please help me out i'm so depressed and such a failure
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!