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3 years ago

Outline any two criteria for classifying materials around us.

Physics

1 answer:

Anna35 [415]3 years ago

6 0

Answer:

ma nutz

Explanation:thanks

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Momentum has a _____. a. direction only b. magnitude only c. direction and magnitude

weeeeeb [17]

Momentum has both direction and magnitude.

It is a vector quantity.

Its formula is = Mass * Velocity, Mass you know is associated with size and velocity of course is associated with direction.

C. direction and magnitude

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3 years ago

Read 2 more answers

Jenny was applying her makeup when she drove into the student parking lot last Friday morning . Unaware that Cheryl was stopped

Akimi4 [234]

Answer: F = 102141N

Explanation: Newton's 2nd Law states that a force can change the motion of a body. The relation is given by

F = m.a

whose units are:

[F] = N

[m] = kg

[a] = m/s²

Jenny's car, at the moment of the break, had acceleration:

$a=\frac{\Delta v}{\Delta t}$

$a=\frac{11}{0.14}$

a = 78.57 m/s²

Then, Force is

F = 1300*78.57

F = 102141 N

Jenny's car experienced a force of magnitude 102141N.

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3 years ago

babunello [35]

Answer:

a) increases

Explanation:

The increase in temperature causes the particles to move much faster. This in turn effects the collision rate of the particle which causes the chemical reaction. Thus the rate of chemical reaction increases.

So, we conclude that the rate of a chemical reaction is directly related to temperature. With increase in temperature there is an increase in the reaction rate and vice versa.

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3 years ago

If everything that is created has to have an end, what could cause the end of the universe itself?

bearhunter [10]

Answer:

The Big Crunch hypothesis is a symmetric view of the ultimate fate of the universe. Just as the Big Bang started as a cosmological expansion, this theory assumes that the average density of the universe will be enough to stop its expansion and begin contracting.

Explanation:

hope it helps

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3 years ago

A ball is thrown vertically upward from the top of a building 112 feet tall with an initial velocity of 96 feet per second. The

nordsb [41]

Answer:

$t=6.96s$