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3 years ago

When a mechanical wave encounters an impenetrable barrier,

Chemistry

1 answer:

Slav-nsk [51]3 years ago

4 0

Answer:

When mechanical waves strike a barrier, at least part of the energy of the waves will be reflected back into the media from which they came.

Explanation:

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What type of subatomic particles are found in the cloud?

Novay_Z [31]

Answer:

Electrons are particles that surround the nucleus of an atom like a cloud. As with protons and neutrons, electrons are essential to an atom's structure.

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3 years ago

Are fossils likely to form in areas that experience a lot of erosion on daily basis?

frosja888 [35]

No, There are not likely to form in areas that experience a lot of erosion on a daily basis.

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3 years ago

It takes 2,267 joules of heat to raise the temperature of a 44.5 gram sample of a metal from 33.9°C to 288.3°C. What is the heat

ehidna [41]

Answer:

$\boxed{\text{0.200 J$^{\circ}$C$^{-1}$g$^{-1}$}}}$

Explanation:

The formula for the amount heat q absorbed by a substance is

q = mcΔT

where

m = the mass of the substance

C = the specific heat capacity of the material

ΔT = the temperature change

Data:

q = 2267 J

m = 44.5 g

T₁ = 33.9 °C

T₂ = 288.3 °C

Calculations:

ΔT = (288.3 - 33.9) °C = 254.4 °C

$\begin{array}{rcl}2267 & = & 44.5 \times C \times 254.4\\2267 & = & 11 180C\\C& = & \dfrac{2267}{11180}\\\\& = & \textbf{0.200 J$^{\circ}$C$^{-1}$g$^{-1}$}\\\end{array}$

$\text{The specific heat capacity of the metal is \boxed{\textbf{0.200 J$^{\circ}$C$^{-1}$g$^{-1}$}}}$

5 0

3 years ago

In a movable pulley system, where does the other effort come from?

seropon [69]

Answer:

In a movable pulley system, where does the other effort come from? is carried by this end of the rope. This means that the structure (ceiling) does half the effort.

Explanation:

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2 years ago

Please help!!

maria [59]

Answer:

Transition metals!

Explanation:

5 0

2 years ago