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
Fynjy0 [20]
3 years ago
6

the speed of sound in the air is about 340m/s. what is the wavelength of a sound wave with a frequency of 400Hz?

Physics
1 answer:
olga2289 [7]3 years ago
5 0

Wavelength = (speed) / (frequency)

Wavelength = (340 m/s) / (400 /s)

<em>Wavelength = 0.85 meter</em>

You might be interested in
From the list below, which name appears in two different parts of the body? *
Kisachek [45]

Answer:

Ngjfibfubbb

Explanation:

7 0
2 years ago
How is the electrostatic force affected when the magnitude of a charge is doubled?
BaLLatris [955]
The magnitude of the electrostatic force between two charges is given by:
F=k_e  \frac{q_1 q_2}{r^2}
where
ke is the Coulomb's constant
q1 and q2 are the two charges
r is the separation between the two charges

We can see that the magnitude of the force is directly proportional to the charges. This means that when one of the charges is doubled, the magnitude of the electrostatic force will double as well, so the correct answer is
A) <span>The magnitude of the electrostatic force doubles</span>
4 0
3 years ago
One of the factors that determines the ? of a capacitor is the frequency measured in hertz.
ycow [4]

Answer:

Reactance

Explanation:

In an AC circuit, the capacitive reactance of a capacitor is given by:

X_C = \frac{1}{2 \pi f C}

where

f is the frequency of the AC current

C is the capacitance of the capacitor

The reactance of the capacitor tells somehow the "resistance" of the capacitor to the passage of current through it. In fact:

- When the frequency of the AC current is zero (this means, we are in regime of DC current), the reactance becomes infinite, and this is true because the capacitor does not let the current pass through it)

- When the frequency of the AC current tends to infinite, the reactance becomes zero, and this is true because in this case the current changes direction so fast that the capacitor has not enough time to "block" the current, so the current almost no feels the presence of the capacitor.

7 0
3 years ago
Place the following structures in the appropriate category based on their location in a cell
Studentka2010 [4]

Answer:

Cell surface.

  • Cilium
  • Plasma membrane
  • Microvilus.

Nucleus

  • Cellular DNA
  • Nucleolus
  • Chromosome.

Cytoplasm

  • Mitochondria
  • Golgi apparatus
  • Cytoskeleton.

3 0
3 years ago
What is the mass of an object with a density of 18 g/cm3 and a volume of 25 cm3
DiKsa [7]

Answer: 0.72 grams

Explanation: Mass can be extracted from the formula of density. D=M/V where D is density and V is volume. Therefore:

18 g/cm^3 = M(25 cm^3) --> Divide by 18g/cm^3 by 25 cm^3 to isolate mass. --> <u>0.72 =M </u> --> Now, to find out which unit you need to use for mass, just look at the density. You can see it is in g/cm^3, and cm^3 was already used for the volume. Thus, gram units are left, so that will be the unit needed, making the final answer 0.72 grams. Hope this helps :)

5 0
2 years ago
Other questions:
  • A resistor with resistance R and an air-gap capacitor of capacitance C are connected in series to a battery (whose strength is "
    13·1 answer
  • Which type of energy is emitted from earth to the atmosphere? *?
    7·1 answer
  • 1. In Newton’s ring experiment, the diameter of the 5th ring is 0.30 cm and diameter of 15th the ring is 0.62 cm. Find the diame
    10·1 answer
  • Also confused on this can someone please help??!
    10·1 answer
  • A triangle with equal sides of length 14 cm has -2.5-nC charged objects at each corner. Determine the direction of the electrica
    15·1 answer
  • Find the kinetic energy of a ball with a mass of 0.06 kg moving at 50 m/s
    13·1 answer
  • Current that moves in one direction from negative to positive. May be created by a battery. Is generally NOT found in U.S. Elect
    12·2 answers
  • Select all that Apple
    11·1 answer
  • Calculate the minimum thickness (in nm) of an oil slick on water that appears blue when illuminated by white light perpendicular
    9·1 answer
  • Please help and thank you
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!