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Vikentia [17]
3 years ago
7

At t = 0 a car has a speed of 30 m/s. At t = 6 s, its speed is 14 m/s.

Physics
1 answer:
Hitman42 [59]3 years ago
4 0

Answer:

-2.67 m/s²

Explanation:

a = Δv / Δt

a = (14 m/s − 30 m/s) / (6 s − 0 s)

a = -2.67 m/s²

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Power in physics is work done over time. So the answer is Power is the rate at which work is done.

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A student needs to prepare 100.0 mL of vitamin C solution according to the directions in Part 1 of the experiment. S/he weighs o
Rudiy27

Answer:

4.99 mg of vitamin C are in the beaker.

Explanation:

Given that,

Weight of vitamin = 0.0499 g

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Weight of water = 100.0 ml

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10\ ml\ solution =\dfrac{10\times49.9}{100}

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4 0
3 years ago
Which of the following is not an example of a chemical reaction? Rust, Photosynthesis, Melting Ice, Heat from Fire?
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2 years ago
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You place a box weighing 200.2 N on a inclined plane that makes a 37.1 angle with the horizontal. Compute the component of the g
salantis [7]

Answer:

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Explanation:

Data given:

Weight of the box= 200.2 N

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Solution;

Gravitational force on the box, F_g= weight of the box

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2 years ago
How can you increase the intensity of sound waves
VladimirAG [237]

Answer

The intensity of a sound wave depends on the pressure of the wave,density of the medium and speed of sound in the medium. Higher density and higher sound speed both give a lower intensity. and may be it is because that sound wave is more characterize by wavelength than frequency..explanation

Explanation:

As decibel levels get higher, sound waves have greater intensity and sounds are louder. For every 10-decibel increase in the intensity of sound, loudness is 10 times greater. Intensity of sound results from two factors: the amplitude of the sound waves and how far they have traveled from the source of the sound.

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