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3 years ago

A man whose weight is 650 N is standing on the ground. The force the ground exerts on him is _____.

1 answer:

3 0

650 Newtons. Okay, since the weight is in Newtons, I'm going to explain this by using one of the 3 laws of Newton. "Every action has an equal and opposite reaction." This means that the ground is exerting the same amount of force as the man, 650 N

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A revolutionary war cannon, with a mass of 2090 kg, fires a 16.7 kg ball horizontally. The cannonball has a speed of 113 m/s aft

OLEGan [10]

Answer:

0.90291 m/s

0.45055 m/s

Explanation:

$m_1$ = Mass of canon = 2090 kg

$m_2$ = Mass of ball = 16.7 kg

$v_1$ = Velocity of canon

$v_2$ = Velocity of ball = 113 m/s

In this system the momentum is conserved

$m_1v_1=m_2v_2\\\Rightarrow v_1=\dfrac{16.7\times 113}{2090}\\\Rightarrow v_1=0.90291\ m/s$

The velocity of the cannon is 0.90291 m/s

Applying energy conservation

$\dfrac{1}{2}m_1v_1^2+\dfrac{1}{2}m_2v_2^2=\dfrac{1}{2}m_2v^2\\\Rightarrow m_1v_1^2+m_2v_2^2=m_2v^2\\\Rightarrow v_2=\sqrt{\dfrac{m_1v_1^2+m_2v_2^2}{m_2}}\\\Rightarrow v_2=\sqrt{\dfrac{2090\times 0.90291^2+16.7\times 113^2}{16.7}}\\\Rightarrow v_2=113.45055\ m/s$

The ball would travel 113.45055-113 = 0.45055 m/s faster

6 0

4 years ago

An object becomes charged when the atoms in the object gain or lose. True or False

sp2606 [1]

Answer:

True.

Explanation:

When an object's atoms gain or lose electrons, it becomes an ion, becoming charged.

3 0

4 years ago

A plane initially traveling at 200 m/s due west experiences a 10 m/s head wind coming from the opposite direction. A). What will

Hitman42 [59]

Ok so it would be late and the relative velocity would be 190 m/s because 200 m/s - 10 m/s is 190 m/s. Hope this helps.

8 0

4 years ago

What is the best description of the end result of chemical bonding for most

forsale [732]

A. Getting a full set of valence electrons

Explanation:

The best description of the end result of chemical bonding for most atoms is the getting of a full set of valence electrons.

Atoms reacts with one another in order to complete valence electronic shell.

The valence electron shell is the outermost energy level of an atom.
It is from this energy level that electrons are lost or gained to form bonds.
All atoms wants to be like the noble gases whose valence electronic shell is completely filled up
This is the crux of chemical bonding
The attraction that is produced from the interaction leads to bond formation

learn more:

Chemical bond brainly.com/question/10903097

#learnwithBrainly

7 0

3 years ago

Solvation in water is called

Leona [35]

Answer:

Image result for Solvation in water is called

Solvation describes the interaction of solvent with dissolved molecules. ... Solvation involves bond formation, hydrogen bonding, and van der Waals forces. Solvation of a solute by water is called hydration.

Explanation:

6 0

3 years ago

Read 2 more answers