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3 years ago

. Why are meteorites moving?

Physics

1 answer:

lisov135 [29]3 years ago

7 0

Answer:

Glow

Explanation:

Actually, it is the air in front of the meteoroid that heats up. The particle is traveling at speeds between 20 and 30 kilometers per second. It compresses the air in front, causing the air to get hot. The air is so hot it begins to glow — creating a meteor - the streak of light observed from Earth.

Hope this helped!

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Find the x-components of this vector: 92.5 m, 32.0 degrees. Remember, angles are measured from the +x axis.

Brrunno [24]

Answer: $78.44\ m$

Explanation:

Given

magnitude of vector $=92.5\ m$

vector makes an angle of $\theta =32^{\circ}$ with x-axis

Vector can be resolved into two components i.e. vertical and horizontal

Horizontal component along x-axis $=92.5\cos 32$

$=78.44\ m$

along the negative x-axis

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3 years ago

Are the days with the longest daylight always in the summer? Are the days with the shortest daylight always in the winter? Expla

jok3333 [9.3K]

The day with the longest daylight is the beginning of Summer.
After that, they start to get shorter.

The day with the shortest daylight is the beginning of Winter.
After that, they start to get longer.

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3 years ago

A concrete block is hung from an ideal spring that has a force constant of 100 N/m . The spring stretches 0.129 m .A- What is th

madam [21]

Answer:

1.31498 kg

0.72050 s

Explanation:

m = Mass of block

g = Acceleration due to gravity = 9.81 m/s²

k = Spring constant = 100 N/M

x = Displacement = 0.129 m

The force balance is

$mg=kx\\\Rightarrow m=\dfrac{kx}{g}\\\Rightarrow m=\dfrac{100\times 0.129}{9.81}\\\Rightarrow m=1.31498\ kg$

The mass of the block is 1.31498 kg

Time period is given by

$T=2\pi\sqrt{\dfrac{m}{k}}\\\Rightarrow T=2\pi\sqrt{\dfrac{1.31498}{100}}\\\Rightarrow T=0.72050\ s$

The period of oscillations is 0.72050 s

The time period does not depend on the acceleration due to gravity. It varies with the mass and the spring constant.

Hence, the time period would be the same

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3 years ago

The atomic mass of gold is 0.197 kg/mole. how many moles are in 0.566 kg of gold.

iogann1982 [59]

Explanation:

0.566kg *(1mol/0.197 kg)= 2.87 mol gold

note how the units cancel out, if the units do not cancel out (kg/kg=1) then u did something wrong

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3 years ago

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Definition: This law states that, in any process, energy is neither created nor destroyed. It can only be

Alika [10]

law of conservation of energy

aka the first law of thermodynamics

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3 years ago