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4 years ago

What increases as the temperature of a solid object rises?

2 answers:

6 0

A. Thermal energy
Thermal energy is heat energy, therefore the hotter a solid is the more thermal energy it has.

C. Volume
When an object gets hotter, it expands. This is becuase the particles vibrate more and so are less compact.

erma4kov [3.2K]4 years ago

3 0

Answer is thermal energy

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Shelli is a student describing the resonance of a metal beam. She demonstrates that the sound dims when the beam is vibrated at

ArbitrLikvidat [17]

Shelli will most likely say that the sound produced by the resonance of a metal is affected by the frequency at which the metal is vibrated. There is a certain frequency that will create a dim sound. If the frequency is changed to the right setting, the sound will intensify.

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4 years ago

A person throws a balloon straight down above level ground. The balloon bounces back up into the air. Drag force is significant

love history [14]

Explanation:

a) Balloon is being thrown down and is speeding up;

mg > $F_drag$

b) Balloon is in the air on its way down and moving with constant speed.

$F_drag$ =mg

c) The Balloon is on the ground and rest instantaneously

mg = Normal

d) Balloon is moving slowly downward;

e) Because, at the peak of trajectory drag force is 0.

Drag force = 0

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4 years ago

Suppose that a certain battery produces a voltage of 1.55V without a load connected (open circuit) and a current of 500mA when s

lubasha [3.4K]

Answer:

Explanation:

Let the internal resistance be r .

Since in open circuit the volt is 1.55 V , this will be the source voltage .

Source voltage = 1.55

If external resistance be R .

1.55 / (R + r ) = .500

R + r = 3.1 ohm

So sum of internal resistance and external resistance will be 3.1 ohm.

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4 years ago

Soap bubbles can display impressive colors, which are the result of the enhanced reflection of light of particular wavelengths f

Mandarinka [93]

Answer:

T= 563/4= 140.75 nm

Explanation:

Soap bubbles can display impressive colors.

In a bubble there are two surfaces the first surface has a phase shift of 180° and second surface has 0° phase shift.

so total $\pi$

wavelength λ= 2π

hence wavelength λ/2

Also λ= $\frac{715}{1.27}$

= 562.9921≅563 nm

also wall thickness T

$2T= \frac{λ}{2}$

T= λ/4

⇒T= 563/4= 140.75 nm

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4 years ago

What is the mass of an object that requires a force of 4,900 Newton's to accelerate 7 m/s/s

Oliga [24]

Answer:

Explanation:

Formula

F = m * a

Givens

F = 4900

a = 7 m/s^2

Solution

4900 = m * 7 Divide by 7

4900/7 = m

700 kg = m

8 0

3 years ago