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2 years ago

A wave has a wavelength of 14 m and a frequency of 24 Hz, what is the speed of the wave?

Physics

1 answer:

lapo4ka [179]2 years ago

6 0

Answer:

Explanation: Speed = Wavelength x Wave Frequency. In this equation, wavelength is measured in meters and frequency is measured in hertz (Hz), .

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What are the three points of the fire triangle

prisoha [69]

1-fuel
2-heat
3-oxygen

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2 years ago

Two masses —m1 and m2— are connected by light cables to the perimeters of two cylinders of radii r1 and r2 respectively, as show

Aleksandr [31]

Answer:

Part a)

Mass of m2 is given as

$m_2 = \frac{20}{3} kg$

Part b)

Angular acceleration is given as

$\alpha = 1.96 rad/s^2$

Part c)

Tension in the rope is given as

$T = 176.6 N$

Explanation:

Part a)

When m1 and m2 both connected to the cylinder then the system is at rest

so we can use torque balance here

$m_1g r_1 = m_2 g r_2$

$20 g(0.5) = m_2 g(1.5)$

$10 = 1.5 m_2$

$m_2 = \frac{20}{3} kg$

Part b)

When block m_2 is removed then system becomes unstable

so force equation of mass m1

$m_1g - T = m_1 a$

also we have

$T r_1 = I\alpha$

now we have

$m_1g = \frac{I a}{r_1^2} + m_1 a$

$a = \frac{m_1g}{\frac{I}{r_1^2} + m_1}$

$a = \frac{20 (9.81)}{\frac{45}{0.5^2} + 20}$

$a = 0.981 m/s^2$

so angular acceleration is given as

$\alpha = \frac{a}{r_1}$

$\alpha = \frac{0.981}{0.5}$

$\alpha = 1.96 rad/s^2$

Part c)

Tension in the rope is given as

$T = \frac{I\alpha}{r_1}$

$T = \frac{45 (1.96)}{0.5}$

$T = 176.6 N$

7 0

3 years ago

Hiii please help i’ll give brainliest if you give a correct answer please thanks!

mrs_skeptik [129]

Answer:

25 to the right

Explanation:

there you go friend your awsome

4 0

2 years ago

A car accelerates from 10m/s to 20m/s over a distance of 80m. What is its acceleration?

Lina20 [59]

Answer:

0.125m/s^2

Explanation:

20-10=10

10 divided by 80=0.125m/s^2

5 0

3 years ago

What are 3 ways a car can accelerate? (CRE)

Nookie1986 [14]

Answer - There are three ways an object can accelerate: a change in velocity, a change in direction, or a change in both velocity and direction.

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2 years ago

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