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3 years ago

Turning a vector to a scalar is possible ???

Physics

1 answer:

sdas [7]3 years ago

3 0

Answer: Yes it is possible to turn a vector to a scalar.

Explanation:

Vectors and scalars represent different types of physical quantities. However, it is sometimes necessary for them to interact. Adding a scalar to a vector is impossible because of their different dimensions in space. Although It is possible to multiply a vector by a scalar.

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How much work is done by a weightlifter who uses a force of 350 N to lift a weight 1.5 meters?

Svet_ta [14]

Answer:

525 j

Explanation:

Work = force * distance

350 N * 1.5 m =

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2 years ago

Sound waves travel fastest through

blsea [12.9K]

Answer:

Solids: Sound travels fastest through solids. This is because molecules in a solid medium are much closer together than those in a liquid or gas, allowing sound waves to travel more quickly through it. In fact, sound waves travel over 17 times faster through steel than through air.

Explanation:

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3 years ago

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Three bullets are fired simultaneously by three guns aimed toward the center of a circle where they mash into a stationary lump.

Effectus [21]

Answer: $2.32\times 10^{-3} kg$

Explanation:

Given

mass of first and second bullet $m_1=m_2=3.90\times 10^{-3} kg$

Velocity of two bullets $v_1=v_2=368 m/s$

velocity of third bullet $v_3=618 m/s$

angles between guns is $120^{\circ}$

Suppose First gun is at $0^{\circ}$ and second is at $120^{\circ}$ and third is at $240^{\circ}$

therefore

conserving momentum in x-direction

$m_1v_1\cos 0+m_2v_2\cos 120+m_3v_3\cos 240=0$

as three bullets club together to become lump

$3.90\times 10^{-3}\times 368+3.90\times 10^{-3}\times 368\times \cos (120)+m_3\times 618\times \cos (240)=0$

$3.90\times 10^{-3}\times 368+3.90\times 10^{-3}\times 368\times (-0.5)+m_3\times 618\times (-0.5)=0$

$0.5\times 3.90\times 10^{-3}\times 368=m_3\times 618\times 0.5$

$m_3=3.90\times 10^{-3}\times \frac{368}{618} kg$

$m_3=2.32\times 10^{-3} kg$

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3 years ago

Frank wrote several statements to summarize the relationship between the first and second laws of thermodynamics.

Kaylis [27]

First law is Conservation of Energy

Second is that entropy of an isolated system will always increase with time.

Entropy is the change of disorder through time. The best statement which relates to the 2nd law is C. Thermal energy flows from areas of higher to lower temperature

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4 years ago

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What is the correct order for the Lunar eclipse

max2010maxim [7]

Answer: A

Explanation:

Lunar eclipses work the same way in a different order: Moon, Earth and Sun all on a line. In this case the Earth's shadow hides the Moon from view.

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3 years ago

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Turning a vector to a scalar is possible ???​

Turning a vector to a scalar is possible ???