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3 years ago

What is mass number

Physics

2 answers:

Mazyrski [523]3 years ago

6 0

Answer:

the total number of protons and neutrons in an atom

laila [671]3 years ago

4 0

Answer:

the number of protons and neutrons together make up the mass number of am element

hope it helps you

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A plane is landing at an airport. The plane has a massive amount of kinetic energy due to it's motion. When the plane lands, it

marshall27 [118]

Answer:

A. The brakes used a coil system to convert the kinetic energy into potential energy stored in the brakes

Explanation:

Based on the law of conservation of energy, the brakes used a coil system to convert the kinetic energy into potential energy stored in the brakes.

The law of conservation of energy states that energy is neither created nor destroyed in a system but it is transformed from one form to another.

As the airplane slows down, the kinetic energy which is presented in the motion of the plane is gradually converted to potential energy.

The potential energy is the energy due to the position of a body.

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3 years ago

What happens to the force between the spheres when you increase the mass of one of the spheres?

andrew11 [14]

The force between the spheres increases when the mass increases in one of the spheres.

Explanation:

Newton law of universal gravity extends gravity beyond the earth's surface. This gravity depends directly on the mass of both objects and is inversely proportional to square of distance between their centers.

$\bold{F=\frac{G \times\left(m_{1} \times m_{2}\right)}{\left(r^{2}\right)}}$

Since gravity is directly proportional to “mass of both interacting objects”, stronger objects with greater gravitational force attract. If the mass of one object increases, gravity between them also increases. For example, if an object's mass of one double, force between them also doubles.

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3 years ago

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A man at point A directs his rowboat due north toward point B, straight across a river of width 100 m. The river current is due

prohojiy [21]

Answer:

1.35208 m/s

Explanation:

Speed of the boat = 0.75 m/s

Distance between the shores = 100 m

Time = Distance / Speed

$Time=\frac{100}{0.75}=133.33\ s$

Time taken by the boat to get across is 133.33 seconds

Point C is 150 m from B

Speed = Distance / Time

$Speed=\frac{150}{\frac{100}{0.75}}=1.125\ m/s$

Velocity of the water is 1.125 m/s

From Pythagoras theorem

$c=\sqrt{0.75^2+1.125^2}\\\Rightarrow c=1.35208\ m/s$

So, the man's velocity relative to the shore is 1.35208 m/s

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3 years ago

An umbrella tends to move upward on a windy day because _____.

masha68 [24]

E. all of the above

An umbrella tends to move upward on a windy day because _A. buoyancy increases with increasing wind speed 
B. air gets trapped under the umbrella and pushes it up 
C. the wind pushes it up 
D. a low-pressure area is created on top of the umbrella

3 0

3 years ago

Anyone good with scientific notations? I sure am not

defon

B is the answer that I know of.

7 0

3 years ago

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