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3 years ago

Which equation will tell you the acceleration of the object?

Physics

1 answer:

zvonat [6]3 years ago

6 0

Answer:

In summation, acceleration can be defined as the rate of change of velocity with respect to time and the formula expressing the average velocity of an object can be written as: a =Δ v/ Δt The other 4 equations: d = vit+ (1/2) at2

Explanation:

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The atomic number of an element is found by?

azamat

Calculate the number of neutrons. Now you know that atomic number = number of protons, and mass number = number of protons + number of neutrons. To find the number of neutrons in an element, subtract the atomic number from the mass number.

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3 years ago

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A ruby laser delivers a 16.0-ns pulse of 4.20-MW average power. If the photons have a wavelength of 694.3 nm, how many are conta

stepan [7]

Answer:

The value is $n = 2.347 *10^{17} \ photons$

Explanation:

From the question we are told that

The amount of power delivered is $P = 4.20 \ M W = 4.20 *10^{6} \ W$

The time taken is $t = 16.0ns = 16.0 *10^{-9} \ s$

The wavelength is $\lambda = 694.3 \ nm = 694.3 *10^{-9} \ m$

Generally the energy delivered is mathematically represented as

$E = P * t = \frac{n * h * c }{\lambda }$

Where $h$ is the Planck's constant with value $h = 6.262 *10^{-34} \ J \cdot s$

c is the speed of light with value $c = 3.0*10^{8} \ m/s$

$4.20 *10^{6} * 16*10^{-9}= \frac{n * 6.626 *10^{-34} * 3.0*10^{8} }{694.3 *10^{-9}}$

=> $n = 2.347 *10^{17} \ photons$

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3 years ago

A negative charge in a cloud induces a positive charge in the ground below the cloud. The charges gradually increase. Then the a

Nataly [62]

A. static discharge <span>Static discharge is the sudden flow of electricity between two electrically charged objects caused by contact, an electrical short, or dielectric breakdown.</span>

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3 years ago

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What is velocity change divided by time change?

Luda [366]

Acceleration: is the change in velocity divided by the time it takes for the change to occur. . Acceleration is the change in verity divided by the time it takes to make the change, Acceleration has direction.

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4 years ago

Which of the following account for the differences between radio waves, X-rays, and gamma rays? Check all that apply

Ket [755]

Answer: A. Frequency

B. Wavelength

Explanation: Electromagnetic waves are waves which can travel through the vacuum. Electromagnetic waves have electrical and magnetic component associated with them.

Electromagnetic waves are arranged in order of increasing frequencies or decreasing wavelengths.

Radio waves, X-rays, and gamma rays are all electromagnetic waves which have different wavelengths and thus have different frequencies. But they all travel with the speed of light.

$\nu=\frac{c}{\lambda}$

The order of frequency of given waves : gamma rays > X rays> Radio waves.

The order of wavelength of given waves : gamma rays < X rays < Radio waves.

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4 years ago

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