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2 years ago

Drag the tiles to the correct boxes to complete the pairs.

Physics

1 answer:

zheka24 [161]2 years ago

7 0

Lacks colored blood - scorpion
soft, unsegmented body - octopus
vertebrate - bird
lacks antennae - starfish

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A systematic error in data is called

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<span>an error having a nonzero mean, so that its effect is not reduced when observations are averaged.</span>

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3 years ago

What is common in elastic collision, inelastic collision and perfectly inelastic collision

Feliz [49]

Answer:

A perfectly elastic collision is defined as one in which there is no loss of kinetic energy in the collision. An inelastic collision is one in which part of the kinetic energy is changed to some other form of energy in the collision.

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2 years ago

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A laser beam enters a 12.0 cm thick glass window at an angle of 33.0° from the normal. The index of refraction of the glass is 1

Alenkinab [10]

Answer:

The time is 0.563 ns.

Explanation:

Given that,

Index of refraction of glass = 1.41

Distance = 12.0 cm

Angle = 33.0°

We need to calculate the refraction angle

Using Snell's law

$n_{1}\sin\theta=n_{r}\sin\theta$

put the value into the formula

$1\times\sin33=1.41\sin\theta$

$\sin\theta=\dfrac{1\times\sin33}{1.41}$

$\theta=22.71^{\circ}$

We need to calculate the velocity of beam in glass

Using formula of velocity

$v=\dfrac{c}{n}$

Put the value into the formula

$v=\dfrac{3\times10^{8}}{1.41}$

$v=2.13\times10^{8}\ m/s$

We need to calculate the time

Using formula of distance

$v=\dfrac{d}{t}$

$t=\dfrac{12.0\times10^{-2}}{2.13\times10^{8}}$

$t=5.63\times10^{-10}\ sec$

$t=0.563\times10^{-9}\ sec$

$t=0.563\ ns$

Hence, The time is 0.563 ns.

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2 years ago

Prisms seperate __ light, such as that from the Sun by wavelength

natka813 [3]

Answer: white

Explanation:

prisms separate white light, such as that from the sun by wavelength.

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2 years ago

Explain how Copernicus concluded that stars were farther away than planets. Draw a diagram showing how this principle applies to

Rainbow [258]

<span>Copernicus decided this with more of an educated guess than anything. For example is when your standing right next to a plane it's huge Right? Well when it's flying it looks really small. He used the same reasoning for stars. Since it looks small it must be farther away.</span>

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2 years ago