All categories

2 years ago

A sound wave has a frequency of 265 hz and a wavelength measured at 1.3

Physics

1 answer:

pochemuha2 years ago

8 0

Answer:

V = f λ speed of wave in terms of frequency and wavelength

t = S / V time for wave to travel a distance S

t = 91.4 m / 344.5 m/s = .265 sec time to travel 91.4 m

You might be interested in

What type of energy is thermal energy

larisa [96]

Answer:

I believe thermal energy is a type of kinetic energy because the atoms are vibrating. Correct me if I am wrong.

7 0

3 years ago

Read 2 more answers

Four point charges are located at the corners of a square. Each charge has magnitude 4.50 nC and the square has sides of length

Dafna11 [192]

Answer:

Explanation:

$r^2 = [\frac{l}{2}]^2 +[\frac{l}{2}]^2$

$r^2 = \frac{2l^2}{4}$

$r^2 = \frac{l^2}{2}$

we know that electric field is given as

$E = \frac{kq}{r^2}$

from the figure electric field c and electric field a CANCEL OUT EACH OTHER

so, we have E_B and E_D is toward -q direction

$E_{net} = 2E = 2* \frac{kq}{r^2} = \frac{2kq}{r^2}$

$E_{net} =\frac{2kq}{(\frac{l}{2})^2}$

$E_{net} =\frac{4kq}{l^2}$

$E_{net} = \frac{4*9*10^{9} *3.2*10^{-9}}{(2*10^{-2})^2}$

$E_{net} = 28.8 *10^{-4} N/C$

3 0

4 years ago

A bar magnet is placed on a table so that the north pole faces right.

Katena32 [7]

The correct answer is C. They are pointing right to left.

Explanation.

A magnet has two poles, a north pole and a south pole. When dealing with magnets, we define the concept of a magnetic field. A magnetic field represents the effect of the magnet on magnetic materials and moving charges in the space around the magnet. For every magnet, the magnetic field lines always point away from the north pole of the magnet towards the south pole. Since the north pole of this magnet faces right, the magnetic field lines point towards the left.

The correct answer is C. They are pointing right to left.

5 0

4 years ago

Read 2 more answers

A circular loop of radius 11.9 cm is placed in a uniform magnetic field. (a) If the field is directed perpendicular to the plane

djverab [1.8K]

Answer:

(a). The strength of the magnetic field is 0.1933 T.

(b). The magnetic flux through the loop is zero.

Explanation:

Given that,

Radius = 11.9 cm