Ques: Q: What type of motion only occurs when there is one force applied at the beginning of the trajectory after which there is no interference apart from gravity? Read this paragraph and choose the correct option from the provided answers: projectile motion: A form of motion where a particle (called a projectile) is thrown obliquely near the earth's surface, & it moves along a curved path under the action of gravity. The path followed by a projectile motion is called its trajectory. Projectile motion only occurs when there is one force applied at the beginning of the trajectory after which there is no interference apart from gravity. Choices: - velocity - propellant - thrust - projectile A:
Ans: projectile

Ques: Q: What determines the color of visible light? Read this paragraph and choose the correct option from the provided answers: Human beings and other primates also have the ability to see in color. We have special cells inside our eyes that can distinguish different wavelengths of visible light. Visible light is light in the range of wavelengths that the human eye can sense. The exact wavelength of visible light determines its color. Choices: - wavelength speed - wavelength density - molecular wavelength - exact wavelength A:
Ans: exact wavelength

Ques: Q: Hyperparathyroidism results from an overproduction of what? Read this paragraph and choose the correct option from the provided answers: Hyperparathyroidism results from an overproduction of parathyroid hormone. This results in excessive calcium being removed from bones and introduced into blood circulation, producing structural weakness of the bones, which can lead to deformation and fractures, plus nervous system impairment due to high blood calcium levels. Hypoparathyroidism, the underproduction of PTH, results in extremely low levels of blood calcium, which causes impaired muscle function and may result in tetany (severe sustained muscle contraction). The hormone calcitonin, which is produced by the parafollicular or C cells of the thyroid, has the opposite effect on blood calcium levels as does PTH. Calcitonin decreases blood calcium levels by inhibiting osteoclasts, stimulating osteoblasts, and stimulating calcium excretion by the kidneys. This results in calcium being added to the bones to promote structural integrity. Calcitonin is most important in children (when it stimulates bone growth), during pregnancy (when it reduces maternal bone loss), and during prolonged starvation (because it reduces bone mass loss). In healthy nonpregnant, unstarved adults, the role of calcitonin is unclear. Choices: - inhibited hormone - tharayroid hormone - elevated hormone - parathyroid hormone A:
Ans: parathyroid hormone

Ques: Q: The number of protons in an atom is called what? Read this paragraph and choose the correct option from the provided answers: The atomic number is the number of protons in an atom. This number is unique for atoms of each kind of element. For example, the atomic number of all helium atoms is 2. Choices: - mass number - metallic number - isotope - atomic number A:
Ans:
atomic number