Answer fast, please.

Answers

Answer 1

Answer: D bomb b j de violence

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If you answer i’ll mark you as brainliest

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a i think? :)

sorry if i’m wrong

A rock is at the top of a 20 meter tall hill. The rock has a mass of 10kg. How much potential energy does it have?

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Answer:

2000 Joules

Explanation:

The frequency of violet light is 7.5x10 to the 14th power hertz. What is the wavelength?

Answers

Wavelength times frequency = speed of light
7.5E14 x wavelength = 300,000 m/s

Wavelength in meters = 300,000 divided by 7.5E14

Final answer:

Violet light frequency is 7.5 x 10^14 hertz. As according to the relation between light's speed, frequency and wavelength, λ = c / f, the wavelength of violet light can be found to be approximately 400 nanometers.

Explanation:

The relationship between frequency (f), wavelength (λ), and the speed of light (c) is expressed by the equation c = fλ. Given the speed of light c is approximately 3.00 × 10⁸ meters per second (m/s) and the frequency of violet light f is given as 7.5 × 10¹⁴ hertz (Hz), we can solve for wavelength λ. Rearranging the equation gives us λ = c / f. Substituting the given values we find that λ = (3.00 × 10⁸ m/s) / (7.5 × 10¹⁴ Hz), which computes to approximately 400 nanometers (nm). This result corroborates that violet light is typically within the range of 380 - 450 nm, thus confirming its position at the high-frequency, short-wavelength end of the visible light spectrum.

Learn more about Visible Light Wavelength here:

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Tyson throws a shot put ball weighing 7.26 kg. At a height of 2.1 m above the ground, the mechanical energy of the ball is 172.1 J. What is the velocity of the ball at the given point? m/s

Answers

Answer:

2.5 m/s

Explanation:

Mechanical energy is the sum of the potential and kinetic energy.

E = PE + KE

E = mgh + ½mv²

172.1 J = (7.26 kg) (9.8 m/s²) (2.1 m) + ½ (7.26 kg) v²

v = 2.5 m/s

Answer:

2.5 m/s

Explanation: i jus did this on edg. its right:)

What happened to the sound made by the tuning fork hit the prongs harder

Answers

the sound waves and vibration will increase causing the sound to be louder. just like if you strum a guitar lightly it is a soft sound, if you strum it hard it will be loud and play not so smootly

a wagon is pulled at a speed of 0.40 m/s by a horse exerting an 1,800 newton horizontal force. what is the power of this horse.

Answers

1,800/0.40=4500 this is the equation you need F=ma then you take f which is 1800 and divided by a which is 0.40 to find m

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Explain the Impulse-Momentum Theorem.