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Roman55 [17]
3 years ago
5

Calculate the frequency of a wave using an equation​

Physics
1 answer:
Gemiola [76]3 years ago
8 0

Answer:

1. f=1T. where: f is the frequency of the wave in hertz. T is the period of the wave in seconds.

2. f=vλ where: f is the frequency of the wave in hertz. v is the velocity of the wave in meters per second. λ is the wavelength of the wave in meters

3. f=cλ

Explanation:

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A mass of 0.450 kg rotates at constant speed with a period of 1.45 s at a radius R of 0.140 m in the apparatus used in this labo
Mamont248 [21]

Answer:

1.603 s

Explanation:

Given that

Initial mass, = 0.45 kg

Initial period, = 1.45 s

Initial radius, = 0.14 m

Final mass, = 0.55 kg

Final period, = ?

Final radios, = 0.14 m

Since we are finding the rotation period of two masses of same radius, we can assume that the outward force is the same in both cases. This means that

m₁r₁ω₁² = m₂r₂ω2²

Where, ω = 2π/T, on substituting, we have

0.45 * 0.14 * (2π / 1.45)² = 0.550 * 0.14 * (2π / T₂)²

0.45 / 1.45² = 0.550 / T₂²

T₂² = 0.550 * 1.45² / 0.45

T₂² = 2.56972

T₂ = √2.56972

T₂ = 1.603 sec

7 0
3 years ago
A key falls from a bridge that is 44 m above the water. It falls directly into a model boat, moving with constant velocity, that
Lady_Fox [76]

The time t it takes for the key to fall 44 m is

44\,\mathrm m=\dfrac12\left(9.8\,\dfrac{\mathrm m}{\mathrm s^2}\right)t^2\implies t=3.0\,\mathrm s

(notice I'm taking the downward direction to be positive)

The boat, moving at a presumably constant speed, then has 3.0 s to travel 19 m to the point of impact, which means its speed must be

v=\dfrac{19\,\mathrm m}{3.0\,\mathrm s}=6.3\,\dfrac{\mathrm m}{\mathrm s}

6 0
4 years ago
an object starts from rest with a constant acceleration of 8.0m/s^2 along a straight line.find the average speed for 5 second in
frozen [14]

Answer:

40 m/s

Explanation:

If you multiply the acceleration with time you get the average speed.

6 0
2 years ago
Kohlberg believed that_____________.A. moral development progressed through distinct, qualitatively different stages. B. moral d
Whitepunk [10]

Answer:

A. moral development progressed through distinct, qualitatively different stages.

Explanation:

Kolhberg’s theory of moral development states that we progress through three levels of moral thinking that build on our cognitive development.

7 0
4 years ago
A golf club with a mass of .85 kg hits a golf ball with a mass of .075 kg. The golf ball was initially at rest. After being hit,
Mariulka [41]

Answer:

- أكثر أنواع التربة خصوبة التربة

- الحمراء .

.

ج- السوداء

8 0
3 years ago
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