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kirza4 [7]
3 years ago
7

_____ are both ways of preserving current energy resources.

Physics
1 answer:
MakcuM [25]3 years ago
3 0

Answer:

4

Explanation:

I think if not. I am sorry

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Which type of bonds hold two or more water molecules together
Afina-wow [57]

Answer:

Hydrogen bond.

Explanation:

It is an intermolecular bonding interaction between two molecules of different electronegative values or bonding between lone pairs of electron rich molecules.

Hydrogen-bonding forms in liquid water as the hydrogen atoms of one water molecule are then attracted towards the oxygen atom of a neighboring water molecule resulting in a general proton shared by two lone electron pairs.

3 0
3 years ago
In midair an M = 145 kg bomb explodes into two pieces of m1 = 115 kg and another, respectively. Before the explosion, the bomb w
Daniel [21]

Answer:

v_2=-133.17m/s, the minus meaning west.

Explanation:

We know that linear momentum must be conserved, so it will be the same before (p_i) and after (p_f) the explosion. We will take the east direction as positive.

Before the explosion we have p_i=m_iv_i=Mv_i.

After the explosion we have pieces 1 and 2, so p_f=m_1v_1+m_2v_2.

These equations must be vectorial but since we look at the instants before and after the explosions and the bomb fragments in only 2 pieces the problem can be simplified in one dimension with direction east-west.

Since we know momentum must be conserved we have:

Mv_i=m_1v_1+m_2v_2

Which means (since we want v_2 and M=m_1+m_2):

v_2=\frac{Mv_i-m_1v_1}{m_2}=\frac{Mv_i-m_1v_1}{M-m_1}

So for our values we have:

v_2=\frac{(145kg)(24m/s)-(115kg)(65m/s)}{(145kg-115kg)}=-133.17m/s

5 0
3 years ago
7
Arlecino [84]

Answer:

3.844 x 10 to the 5th power

Explanation:

4 0
3 years ago
A car travels on a banked circular curve at constant speed. All four of the car's tires roll without slipping. The car moves at
kvv77 [185]

Answer:

b. The horizontal component of the normal force acts toward the center of the circle.

Explanation:

When a car on a banked turn move with just the right speed so that the frictional force is zero, a component of the normal force -which is always perpendicular to the surface- acts as the centripetal force on the car. This is because the normal force now has a horizontal component, and this component supplies the centripetal force.

7 0
3 years ago
What will most likely happen if a sound wave moves from the air through a solid?
Marta_Voda [28]
C. It will increase in speed
6 0
3 years ago
Read 2 more answers
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