Correct Answer: C. 10N

Explanation

R = \(\sqrt{A^2 + B^2} = \sqrt{6^2 + 8^2} = 10N\)

Correct Answer: B) 2

Explanation

Correct Answer: C) Anaphase

Explanation

This question is asking about mitosis, which is the process of cell division that results in the formation of two identical daughter cells. The question wants to know at what stage of mitosis do the two daughter chromosomes separate completely. The options given are: early prophase, telophase, anaphase, and late prophase. During mitosis, there are four main stages: prophase, metaphase, anaphase, and telophase. Anaphase is the stage where the two daughter chromosomes separate completely and move towards opposite poles of the cell. This is the stage where the spindle fibers attached to the chromosomes begin to shorten, pulling the chromosomes apart. Therefore, the correct answer to this question is Option C: anaphase. It is important to understand the stages of mitosis as it is a vital process for growth, repair, and maintenance of the body's cells. By understanding mitosis, we can better understand how cells divide and how they can sometimes become cancerous.

Correct Answer: C. in uniform

Explanation

The correct answer is 'in uniform'. The phrase 'in uniform' is used to describe someone who is wearing the official clothes or uniform that are worn by people doing a particular job.

Correct Answer: D) allotropy

Explanation

Option B, isotropy, refers to a property of materials that have the same physical properties in all directions. It is not the correct answer for this question.

Option C, isomorphism, refers to a property of materials that have the same crystalline structure. It is not the correct answer for this question.

Option D, allotropy, is the correct answer. Allotropy refers to the property of an element that can exist in two or more different structural forms but still has the same chemical properties. For example, carbon can exist as both diamond and graphite, which are different forms of the same element.

Understanding allotropy is important in understanding the properties of different elements and their behavior in different conditions. For more information, please see the relevant sections of the recommended textbooks.

Correct Answer: D. sulphur

Correct Answer: D. Paul and Barnabas

Correct Answer: C. 40N

Explanation

Here's how to solve the problem:

1. Understand the Formula for Efficiency:

Efficiency (η) is defined as the ratio of Mechanical Advantage (MA) to Velocity Ratio (VR), usually expressed as a percentage:

η = (MA / VR) * 100%

2. Convert Efficiency to a Decimal:

Given efficiency = 75% = 0.75

3. Calculate Mechanical Advantage (MA):

We have η = 0.75 and VR = 5.

0.75 = MA / 5

MA = 0.75 * 5

MA = 3.75

4. Understand the Formula for Mechanical Advantage:

Mechanical Advantage (MA) is the ratio of the Load (L) to the Effort (E) needed to lift it:

MA = Load / Effort

5. Calculate the Effort (E):

We know MA = 3.75 and Load = 150N.

3.75 = 150 N / Effort

Effort = 150 N / 3.75

Effort = 40 N

Therefore, the effort needed would be 40N.

The final answer is 40N

Correct Answer: A. it passes twice through the heart in a complete circuit

Correct Answer: A. increase in the pressure of the atmosphere