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4 years ago

Describe the relationship between a moving object's mass and its kinetic energy.

Physics

1 answer:

Paladinen [302]4 years ago

5 0

Answer:

$E=\dfrac{1}{2}mv^2$

Explanation:

If m is the mass of the object and v is the velocity of the object. The kinetic energy is due to the motion of an object. It is given by the relation as follows :

$E=\dfrac{1}{2}mv^2$

The above formula is used to find the kinetic energy of an object.

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Show all work: A rock contains 125g of a radioactive isotope with a half-life of 150,000 years and 875g of its daughter material

Xelga [282]

Answer:

$t = 500000\,years$

Explanation:

The time constant of the radioactive isotope is:

$\tau = \frac{150000\,years}{\ln 2}$

$\tau = 216404.256\,years$

The isotope decay is predicted by the following model:

$\frac{m}{m_{o}} = e^{-\frac{t}{\tau} }$

$\frac{125\,g}{125\,g + 875\,g} = e^{-\frac{t}{216404.256\,years} }$

$0.125 = e^{-\frac{t}{216404.256} }$

The age of the rock is determined after algebraic handling:

$\ln 0.125 = -\frac{t}{216404.256}$

$t = 500000\,years$

4 0

4 years ago

Is a stapler a compound machine?

m_a_m_a [10]

yes..............................

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3 years ago

An object is electrically charged if the amounts of positive and negative charge it contains are not _______.

Naddik [55]

Equal bc it’s neutral

4 0

4 years ago

Read 2 more answers

What is the x-component of a vector with a magnitude of 115 km at an angle of 22°?

ruslelena [56]

The x-component of a vector are < 106.6, 43.07 >

Depending on the angle we are provided, the x-component of a vector can either be cos or sin. Cos always corresponds to the right triangle's side that contacts the specified angle.

If a vector v with magnitude ||v|| makes an angle θ with the positive x-axis then,

v = ||v|| cos θi + ||v|| sin θj

= < ||v|| cos θ , ||v|| sin θ >

Magnitude p = 115 km

Angle = 22°

p = ||p|| < cos θ, sin θ >

p = 115 < cos 22°, sin 22° >

p = 115 < 0.927, 0.3746 >

p = < 106.6, 43.07 >

Therefore, the x-component of a vector are < 106.6, 43.07 >

Learn more about vectors here:

brainly.com/question/8043832

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4 0

2 years ago

Tsunami waves have ?

mr Goodwill [35]

I think it #3(not Sure) I think Its because of their long wavelengths that tsunamis behave as shallow-water waves.

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3 years ago