2 years ago

How does the wavelength of a wave change when frequency decreases? when frequency increases?

Physics

1 answer:

KonstantinChe [14]2 years ago

7 0

Wavelength increases as Frequency decreases and vice versa.

This is because Wavelength and frequency are inversely related.

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2 ways in which the effects of friction can be minimised in the experiment

Vlad [161]

Answer:

Friction can be minimized by using lubricants like oil and grease and by using ball bearing between machine parts. A substance that is introduced between two surfaces in contact, to reduce friction, is called a lubricant. Fluid friction can be minimized by giving suitable shapes to the objects moving in the fluids.

Explanation:

hope it helps

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1 year ago

Acceleration is generally defined as the time rate of change of velocity. When can it be defined as the time rate of change of s

Lena [83]

Answer:

When the velocity doesn't change its direction

Explanation:

Since velocity vector has 2 components: direction and magnitude, and speed is the velocity's magnitude. So if the velocity doesn't change its direction, we essentially use its magnitude, aka speed, to calculate the rate of change for acceleration.

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2 years ago

Read 2 more answers

Find expressions for the force needed to bring an object of mass m from rest to speed v in time t. express your answer in terms

VARVARA [1.3K]

Good morning.

We have that:

$\mathsf{V = a\cdot t}$ , since we have rest in the inicial time.

The acceleration can be found with Newton's Law:

$\mathsf{F = m\cdot a\iff a = \dfrac{F}{m}}$

Now we put the acceleratin in the velocity equation:

$\mathsf{V = \dfrac{F}{m} \cdot t}$

We want the force, so, let's isolate F:

$\mathsf{V\cdot m = F\cdot t}\\ \\ \\ \boxed{\mathsf{F = \dfrac{V\cdot m}{t}}}$

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2 years ago

Select the correct answer. A golfer hits a golf ball with a velocity of 36.0 meters/second at an angle of28.0°. If the hang time

lions [1.4K]

Its 83 im pretty sure :)

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2 years ago

A water tank has a mass of 3.64 kg when empty and 51.8 kg when filled to a certain level. What is the mass of the water in the t

mrs_skeptik [129]

Subtract the total mass of the tank and water by the mass of the empty tank. That will yield the mass of the water.

51.8 - 3.64 = 48.16.

Your answer is 48.16 kg

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2 years ago