Exams & Certification

write 0.125 as a simplest fraction and percent. The correct answer and explanation is: The decimal 0.125 can be written as the fraction 1/8 and as the percentage 12.5%. Explanation: To convert a decimal into a fraction, you start by considering the place value of the decimal. The decimal 0.125 has three digits after the […]

Ostrich is a big bird. It has wings just like the smaller birds. What could be the reason that they cannot fly? a. They are enemies. b. They are lazy in flying. c. They only like to walk and run. d. They cannot lift their heavy bodies off the ground. The correct answer and explanation

Write the equation for the reduction of propene to propane using a transition metal catalyst. Group of answer choices A. CH2CHCH3 + H2 + Pt —> CH3CH2CH3 + Pt B. CH2CHCH3 + Pt —> CH3CH2CH3 + Pt C. CH2CHCH3 + H2 + Pt —> CH3CH2CH3 D. CH2CHCH3 + H2 + Pt —> CH3CHCH3 + Pt

The use of wheels of small diameter rather than wheels of large diameter to drive a set length of belt has the disadvantage of A. requiring lower belt tensions. B. requiring a higher shaft speed. C. increasing belt speed. D. causing high bending stresses. The correct answer and explanation is: The correct answer is B.

Which factor provides the primary stimulus to breathe deeper and faster? The correct answer and explanation is: The primary factor that stimulates breathing deeper and faster is the level of carbon dioxide (CO2) in the blood. When CO2 levels increase, it lowers the pH of the blood, making it more acidic. This change is detected

Choose the function that represents the data in the table The Correct Answer and Explanation is: The correct function that represents the data in the table is y = 3x² + 2. To determine the correct function, we can systematically test each multiple choice option using the data points from the table. The goal is to

The corticospinal tract: options: originates in the frontal lobes. allows us to sense temperature and pain. is an ascending pathway. The correct answer and explanation is: The correct answer is: originates in the frontal lobes. The corticospinal tract is a descending pathway that originates from the primary motor cortex in the frontal lobes of the

If air resistance is negligible, the acceleration of all projectiles is exactly the same. True False The correct answer and explanation is: Correct Answer: True When air resistance is negligible, the only force acting on a projectile is gravity. Gravity provides a constant downward acceleration, which is the same for all objects, regardless of their

Why do some animals have special body parts? a. to make them strong b. to make them live long c. to be able to reproduce more d. to get food, protection, and movement The correct answer and explanation is: The correct answer is d. to get food, protection, and movement. Many animals have special body

Which of the following is not a special part of animals? a. beak b. head c. gills d. wings The correct answer and explanation is: The correct answer is b. head. Explanation:The head is a common body part found in nearly all animals, not a special part. The head serves as the primary site for