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vagabundo [1.1K]
3 years ago
5

Which statement is true about the formation of bounds

Physics
1 answer:
MariettaO [177]3 years ago
4 0
The formation of bonds releases energy. 
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1. A tennis ball is dropped from a second story window. It is in free fall, accelerating downward at a rate of 9.8 m/s2. At the
inna [77]

Answer:

<h2>Both balls will hit the ground at the same time, because gravity is constant.</h2>

Explanation:

Notice that both balls are being thrown at the same initial height.

It's important to know that these movements which depends of gravity (a constant acceleratio) they would fall at the same rythm, because the gravity is a constant.

Remember that gravity is an acceleration, which it's defined as the change of the velocity, so if both balls change their vertical velocity at the same rate, then they will fall at the same time, because they have the same initial height.

Additionally, when you throw a ball horizontally, it will bend down due to gravity, and this falling movement is the same as if you throw vertically as a free falling movement.

Therefore, both balls will hit the ground at the same time, because gravity is constant.

8 0
4 years ago
What is the mass of an object with a density of 13.5 g/cm3 and a volume of 5cm3?
STatiana [176]
Density d=m/V

mass m=d.V=13.5×5=67.5g

m=67.5g

hope this helps you
7 0
3 years ago
A boat with a mass of 1000 kg drifts with the current down a straight section of river parallel to the +x+x axis with a speed of
IrinaK [193]

Answer:

A.

Explanation:

Our values are defined by,

m=1000kg\\v = 2m/s\\a = 2.7 \angle 45\°

We can express also in a vectorial way, then

v=2\hat{i} \rightarrowno values in \hat{j}

Acceleration as follow,

a= 2.7cos45 \hat{i} + 2.7 sin45 \hat{j}

We know that velocity is given by,

V(t) = v_0+at \rightarrow v_0 = 2

We need to calculate for t=3, then

v(3) = 2\hat{i} +(2.7cos45 \hat{i} + 2.7 sin45 \hat{j})*3

v(3) = (2\hat{i}+3*2.7cos45 \hat{i})+(3*2.7 sin45 \hat{j})

v(3) = (2+3*2.7cos45)\hat{i}+(5.7 sin45 )\hat{j}

v(3) = 7.7\hat{i}+5.7\hat{j}

Our mass is 1000Kg, so the momentum is

P = mv

P= 1000(7.7\hat{i}+5.7\hat{j})

P=7700\hat{i}+5700\hat{j}

7 0
4 years ago
Plz help i really need this
ddd [48]

Answer:

The reactivity of metals increases as you move left in a period and as you move down in a group, so Marie needs to know the period and group of the element inside each box. Boxes that show locations in groups 1 or 2 or in period 8 contain the most reactive elements.

Explanation:

6 0
3 years ago
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You have a nightlight plugged into an outlet in the hallway, which uses 3.5 watts when plugged in. If the house circuit provides
nekit [7.7K]
Base on the said question or problem that state and ask to calculate the current of the said light bulb and in my further calculation and further analysis, I would say that the current of the light bulb would be 0.0292. I hope you are satisfied with my answer and feel free to ask for more 
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4 years ago
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