What type of machine is a pair of scissors?a. Simple - Lever
b. Simple - Wedge
c. Compound - Lever and Wedge
d. Compound - Inclined plane and lever.

Answers

Answer 1

Answer:

The type of machine of a pair of scissors is a compound machine classified as lever and wedge. The answer is letter C. The pivot joint is the lever and the wedge are the blades of the scissors. This is to efficiently exert force on an object to cut it.

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The main difference between speed and velocity involves A. gravity.
B. distance.
C. weight.
D. direction.

Answers

Velocity is speed AND its direction.

The Correct answer to this question for Penn Foster Students is: Direction

What happens in a neutralization reaction?

Answers

A neutralization reaction occurs when an acid and a base (usually both are in acqueous solutions) react to form water and a salt, which do not exhibit any of the acid or base properties. An acid is identified by being paired with a hydrogen ion and a base is identified by being paired with a hydroxide group.

Answer:

Read more on Brainly.com - brainly.com/question/1335446#readmore

Explanation:

What is the density of 244 grams of aluminum that has a volume of 90 ml?

Answers

Answer:

The answer is 2.71 g/mL

Explanation:

The density of a substance can be found by using the formula

$density = (mass)/(volume) \n$

From the question

mass = 244 g

volume = 90 mL

So we have

$density = (244)/(90) = (122)/(45) \n = 2.71111111...$

We have the final answer as

2.71 g/mL

Hope this helps you

An abattoir has a mass of 100 g. What will be the total mass if 100 ml of water and 50 ml of oil are added?

Answers

Answer:

The total mass of the abattoir is 100 grams. When you add 100 ml of water and 50 ml of oil, you need to consider the density of these substances to calculate their mass.

The density of water is approximately 1 gram per milliliter (g/ml). So, 100 ml of water has a mass of 100 grams.

The density of oil can vary depending on the type, but for a rough estimate, we can assume it's around 0.9 grams per milliliter (g/ml). So, 50 ml of oil has a mass of 50 x 0.9 = 45 grams.

Now, you can calculate the total mass:

Total mass = Mass of abattoir + Mass of water + Mass of oil

Total mass = 100 grams + 100 grams + 45 grams

Total mass = 245 grams

The total mass when 100 ml of water and 50 ml of oil are added to the abattoir will be 245 grams.

Explanation:

Geologists cannot yet predict earthquakes because

Answers

Geologists cannot yet predict earthquakes because the earthquakes caused by the movement of plates do not have the precise time and place when will it moves.

What is the speed of sound, when travelling through steel?