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3 years ago

How fast do sound waves travel in air? How does this compare to the speed of light waves?

1 answer:

3 0

Soundwaves are longitudinal waves whereas light (electromagnetic waves) are transverse waves.
Soundwaves oscillate parallel to the direction of propagation.
Light waves oscillate at right angles to the direction of propagation.

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How are science and technology the same

Ilia_Sergeevich [38]

Answer:

Science is the study of the natural world by collecting data through a systematic process called the scientific method. And technology is where we apply science to create devices that can solve problems and do tasks. Technology is literally the application of science

Explanation:

3 0

3 years ago

A series RL circuit includes a 6.05 V 6.05 V battery, a resistance of R = 0.655 Ω , R=0.655 Ω, and an inductance of L = 2.55 H.

Ivenika [448]

Answer:

The induced emf 1.43 s after the circuit is closed is 4.19 V

Explanation:

The current equation in LR circuit is :

$I=\frac{V}{R} (1-e^{\frac{-Rt}{L} })$ .....(1)

Here I is current, V is source voltage, R is resistance, L is inductance and t is time.

The induced emf is determine by the equation :

$V_{e}=L\frac{dI}{dt}$

Differentiating equation (1) with respect to time and put in above equation.

$V_{e}= L\times\frac{V}{R}\times\frac{R}{L}e^{\frac{-Rt}{L} }$

$V_{e}=Ve^{\frac{-Rt}{L} }$

Substitute 6.05 volts for V, 0.655 Ω for R, 2.55 H for L and 1.43 s for t in the above equation.

$V_{e}=6.05e^{\frac{-0.655\times1.43}{2.55} }$

$V_{e}=4.19\ V$

5 0

3 years ago

Item 19 A student with arms outstretched stands on a platform that is rotating with a constant angular speed. The student then p

nadezda [96]

Answer:

An increase in angular speed due to conservation of energy priciple.

Explanation:

This leads to a decrease in your moment of inertia. This means that your angular velocity must increase as a result of conservation of energy principle and therefore you will spin faster.

It's also the same way this conservation of energy principle applies to ice skaters that makes them spin faster when they suddenly draw their arms inwards.

4 0

3 years ago

In what scenario might a red ball appear black?

zhuklara [117]

A scenario a red ball might appear black is when there is a shadow in front of it.or when the ball is in a dark place.

3 0

4 years ago

Please help with this, oh and bungee gum contains both the properties of rubber AND gum you see?

Sladkaya [172]

Can I still get 5 points bc u already figured it out

8 0

3 years ago