Question 1
Which compounds are both classified as electrolytes?

Answer:

c

Explanation:

Given: Length of rod (L) = 80 cm

Weight of rod (W) =2.0 N

From the attached pictorial diagram,

XY = 80 cm,,XC = 40 cm, XA = 20 cm, AC = 20 cm

Let AB = z cm

Apply the principle of moment about the thread,

            5.0 N × AX = (6.0 N × AB) + (2.0 N ×AC)

or,   5.0 N × 20 cm = (6.0 N × z cm) + (2.0 N ×20 cm)

or.                AB = z = 10 cm

Now, distance XB = XA + AB = 20 cm + 10 cm = 30 cm

Hence, 6.0 N weight should be suspended from X end at distance of 30 cm

Final answer:

6.0 N weight must be placed 0.30 meters (or 30 cm) from end X to keep the rod in equilibrium.

Explanation:

To find the distance of the 6.0 N weight from end X that will keep the rod in equilibrium, you can use the principle of moments (also known as the law of torques). In equilibrium, the sum of the clockwise moments (torques) must be equal to the sum of the counterclockwise moments (torques).

Let's consider the moments (torques) about the point where the rod is suspended:

The 2.0 N weight (the rod's weight) is acting at the midpoint of the rod, which is 40 cm from the suspension point. The moment due to this weight is 2.0 N * 0.40 m = 0.80 N·m in the counterclockwise direction.

The 5.0 N weight at end X is acting at a distance of 20 cm (0.20 m) from the suspension point. The moment due to this weight is 5.0 N * 0.20 m = 1.00 N·m in the counterclockwise direction.

The 6.0 N weight hanging on the rod at an unknown distance "d" from end X creates a moment in the clockwise direction. So, the moment due to this weight is 6.0 N * d m in the clockwise direction.

In equilibrium, the sum of the counterclockwise moments must equal the sum of the clockwise moments:

0.80 N·m + 1.00 N·m = 6.0 N * d m

Now, solve for "d":

1.80 N·m = 6.0 N * d m

Divide both sides by 6.0 N:

d m = 1.80 N·m / 6.0 N = 0.30 m

So, the 6.0 N weight must be placed 0.30 meters (or 30 cm) from end X to keep the rod in equilibrium.

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It was one of the earliest times the concept of crustal motion had been presented to the scientific world, and it lay the foundation for the creation of current plate tectonics, even if Wegener's "continental drift" hypothesis was eventually refuted.

What is Plate tectonics theory?

In order to comprehend mountain-building processes, volcanic eruptions, earthquakes, the evolution of the Earth's surface, and rebuild the continents and oceans that once covered it, plate tectonics, a theory about the dynamics of the lithosphere, revolutionized Earth sciences.

In the 1960s, the theory of tectonics was developed. The lithosphere, which really is typically 100 km thick and sits on top of the asthenosphere, a plastic layer, is said to be Earth's outermost, unyielding layer.

The lithosphere is divided into several small plates, six to eight medium-sized local plates, and seven extremely massive continental and oceanic plates.

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Answer:

Carbon monoxide is produced when combustion reactions are not fully completed,either through lack of oxygen or due to low mixing.

Carbon monoxide is a colorless and odorless gas.