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nlexa [21]
2 years ago
5

Please help me ; - ;

Physics
1 answer:
Irina18 [472]2 years ago
5 0

Answer:

2 = C

3 = B

1 = A

Explanation:

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The distance from one compression in a sound wave to the next compression is defined as the __________.
a_sh-v [17]
It is B) Wavelength, because it measures the "length" between "waves", therefore, wavelength.
5 0
3 years ago
he absolute potential at a distance of 2.0 m from a positive point charge is 100 V. What is the absolute potential 4.0 m away fr
lorasvet [3.4K]

Answer:

50 V

Explanation:

The formula electric potential is given as,

V = kq/r............. Equation 1

q = Vr/k ................. Equation 2

Where q = charge at that point, V = Electric potential, k = coulombs constant, r = distant.

Given: V = 100 V, r = 2.0 m, k = 9.0×10⁹ Nm/C².

Substitute into equation 1

q = (100×2)/(9.0×10⁹ )

q = (200/9)(10⁹)

q = 22.22×10⁻⁹

q = 2.22×10⁻⁸ C.

The potential at point 4.0 m

Given: r = 4.0 m, q = 2.22×10⁻⁸ C, k = 9.0×10⁹ Nm²/C²

Substitute into equation 2

V = 9.0×10⁹(2.22×10⁻⁸)/4

V = 49.95 V

V ≈ 50 V

Hence the potential = 50 V

8 0
3 years ago
Read 2 more answers
Convert gravitational potential energy to kinetic energy.
Digiron [165]

Answer:

1.7 J

Explanation:

The energy carried by a single photon is given by

E=hf

where h is the Planck's constant and f is the frequency of the photon.

The photon of our exercise has a frequency of f=1.7 \cdot 10^{17} Hz, therefore its energy is

E=hf=(6.63 \cdot 10^{-34}Js)(1.7 \cdot 10^{17} Hz)=1.1 \cdot 10^{-16} J

4 0
2 years ago
EM waves consist of changing electric and magnetic fields moving perpendicular with respect to each other. What kind of wave is
Serhud [2]

Answer:

Transverse

Explanation:

Electromagnetic waves don't depend on the medium they travel through like a mechanical wave does, so they aren't mechanical. They don't oscillate (move back in forth) in the direction they travel either, ruling out compressional and longitudinal waves.

That leaves tranverse waves, the ones we're most used to, since they look very "wavelike," with smooth peaks and valleys. Electromagnic waves behave like these, oscillating in a plane perpendicular to the direction they're traveling in.

5 0
3 years ago
A pressure of 70N/m2 equals
laiz [17]

Answer:

Newton/square meters=70 AND Pascal=70

Explanation:

Formula:multiply the pressure value by 1.

6 0
2 years ago
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