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3 years ago

Classify the statement below as either Speed or Velocity?

Physics

1 answer:

Yuki888 [10]3 years ago

4 0

Answer:

Hello There!

It is Speed.

$\Large\bold\red{Reason}$

Because in the question it is said that at which speed car is travelling.

Speed is a scalar quantity.

If it is velocity then first know this that it is a vector quantity.

It must include both magnitude and direction.

If it is velocity then it would be 40 mph east or west or north or south.

<h2>I hope it is helpful to you...</h2><h3>Cheers!_____________</h3>

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List the main types of electromagnetic waves in order of increasing frequency. radio waves, microwaves, infrared, visible light,

alexandr1967 [171]

Answer:

radio waves, microwaves, infrared, visible light, ultraviolet light, X-rays, gamma rays

Explanation:

Electromagnetic waves are oscillations of electric and magnetic fields in a direction perpendicular to the direction of motion of the wave (transverse waves). They are classified into 7 different types, according to their frequencies.

From lowest to highest frequency, we have:

Radio waves

Microwaves $10^9 Hz - 4\cdot 10^{13}Hz$

Infrared $4\cdot 10^{13} - 4\cdot 10^{14} Hz$

Visible light $4\cdot 10^{14} - 8\cdot 10^{14}Hz$

Ultraviolet $8\cdot 10^{14} - 2.4\cdot 10^{16} Hz$

X-rays $2.4\cdot 10^{16} -5 \cdot 10^{19}Hz$

Gamma rays $>5\cdot 10^{19} Hz$

3 0

4 years ago

Read 2 more answers

If given both the speed of light in a material and an incident angle. How can you find the refracted angle?

Basile [38]

Answer:

$r = Sin^{-1}\left ( \frac{v Sini}{c} \right )$

Explanation:

Let the speed of light in vacuum is c and the speed of light in medium is v. Let the angle of incidence is i.

By using the definition of refractive index

refractive index of the medium is given by

n = speed of light in vacuum / speed of light in medium

n = c / v ..... (1)

Use Snell's law

n = Sin i / Sin r

Where, r be the angle of refraction

From equation (1)

c / v = Sin i / Sin r

Sin r = v Sin i / c

$r = Sin^{-1}\left ( \frac{v Sini}{c} \right )$

8 0

4 years ago

If you float a piece of wood in a container half-full of water that rests on a weighing scale, the weight reading on the scale w

Alexeev081 [22]

If you float a piece of wood in a container half-full of water that rests on a weighing scale, the weight reading on the scale will increase.

<h3>What is Buoyancy?</h3>

Buoyancy is the force through your fluids or total or submerged bodies. Also known as Archimedes' theorem. The fluid of the direction on the body produces a resultant force but with the direction of the weight, with the opposite direction, upwards.

All material submerged in a liquid under the action of buoyancy, for this reason we have that the value on the scale will be increased with a system of a wood floating in water.

See more about Buoyancy at brainly.com/question/19168433

#SPJ12

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2 years ago

What the velocity from the graph given above?

igomit [66]

Answer:

i think its 4 or 35

Explanation:

its in the middle of 40 and 30

5 0

3 years ago

How much does force increase if mass is doubled

katrin2010 [14]

First of all, the question is worded somewhat ambiguously because mass does not necessarily imply that there is a force (i.e. an object could be stationary in a system with no gravity and not have a force, or something of the like). Moreover, simply because an object is twice the mass does not mean the force will change.

However, we know from Newton's second law that F = ma. Therefore, force will increase or decrease proportionally with mass. This means if an object maintains a contestant acceleration and its mass doubles, the force that it provides will also double.

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3 years ago

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