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SIZIF [17.4K]
2 years ago
7

Using the image provided, which moon phase is next?

Physics
2 answers:
ella [17]2 years ago
5 0

Answer:

Waning Crescent

Sergio [31]2 years ago
3 0

Answer: waxing crescent

Explanation:

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Vicky wanted to investigate water evaporation. She placed 50 mL of distilled water in three identical glass jars. She left one j
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Answer:

D. the amount of water placed in jars

Explanation:

it was the same for all of the jars at the beginning

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2 years ago
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Find the potential energy of a 2kg ball 15m in the air
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<span>The ball's gravitational potential energy at its peak height was 0.4 joules, and its .... Ignore air resistance and determine (a) the kinetic energy at 28.1 m, (b) the .... At position B, just before it lands, it is falling at 15m/s. a) if the blocks potential ...</span>
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3 years ago
A pendulum of mass 5.0 kg hangs in equilibrium. A frustrated student walks up to it and kicks the bob with a horizontal force of
Phoenix [80]

Answer:

The length is L = 6.206m and the angle is \theta = 37.752^o.

Explanation:

The period T of the pendulum is related to its length L by

T = 2\pi \sqrt{\dfrac{L}{g} },

where g =9.8m/s^2 is the acceleration due to gravity.

Solving for L we get

L = \dfrac{T^2g}{4\pi^2}

putting in T =5.0s and g =9.8m/s^2 we get:

L = \dfrac{(5.0s)^2*9.8m/s^2}{4\pi^2}

\boxed{L = 6.206m.}

There are two forces acting on the pendulum: The gravitational force mg and the F = 30N student's force. Therefore, the angular displacement \theta that these forces give is

sin(\theta ) = \dfrac{F}{mg}

\theta = sin^{-1}( \dfrac{F}{mg})

putting in F =30N, m =5.0kg, and g =9.8m/s^2 we get

\theta = sin^{-1}( \dfrac{30N}{5.0kg*9.8m/s^2})

\boxed{\theta = 37.752^o.}

4 0
3 years ago
How much of Earth's surface is dry, ice-free land? *
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Answer:

Less than a quarter of Earth's surfaces are dry, ice free lands

8 0
2 years ago
The measure of how much salt will dissolve into 100g of water is _______________ .
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The measure of how much salt will dissolve into 100g of water is _solution_ .
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3 years ago
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