3 years ago

When a high-mass star explodes, which of the following is left over in the center?

Physics

1 answer:

il63 [147K]3 years ago

8 0

I would say option D, it depends on the size of the star

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Answer:

0.375 m/s north & 0.375 m/s east

Explanation:

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3 years ago

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Which of the following is not true regarding atmospheric pressure

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2 years ago

Consider an ideal gas at 27.0 degrees Celsius and 1.00 atmosphere pressure. Imagine the molecules to be uniformly spaced, with e

antiseptic1488 [7]

Answer:

The length of an edge of each small cube is 3.43 nm.

Explanation:

Given that,

Temperature of ideal gas =27.0°C

Pressure = 1.00 atm

We need to calculate the length of an edge of each small cube

Using gas equation

$PV=nRT$

$PV=NkT$

$V=\dfrac{NkT}{P}$

For, N = 1

Where,

N = number of molecule

k = Boltzmann constant

T = temperature

P= pressure

Put the value into the formula

$V=\dfrac{1\times1.38\times10^{-23}\times(27+273)}{1.03\times10^{5}}$

$V=4.019\times10^{-26}\ m^3$

Now, for the cube

$V=L^3$

$L=V^{\frac{1}{3}}$

$L=(4.019\times10^{-26})^{\frac{1}{3}}$

$L=3.43\times10^{-9}\ m$

$L=3.43 nm$

Hence, The length of an edge of each small cube is 3.43 nm.

3 0

3 years ago

By what factor should the length of a simple pendulum be changed in order to triple the period of vibration?

kenny6666 [7]

Answer:

increased by 9 times

Explanation:

As the period of a simple pendulum is defined as the following formula

$T = 2\pi\sqrt{\frac{L}{g}}$

where L is the length of the pendulum and g is the constant gravitational acceleration. Since L is under a square root, if you want to triple the period of vibration, L must be increased by 9 times so that $\sqrt{9} = 3$

4 0

3 years ago