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Questions in physics

[Answered] 1. When a homemade oil and vinegar salad dressing is left standing, it separates into layers. The salad dressing is a: A. solution B. suspension C. colloid D. compound 2. Which of the following is not an example of a physical property? A. density B. hardness C. flammability D. melting point 3. Which material is a poor conductor of heat? A. iron B. wood C. silver D. copper

[Answered] Write this in kilometers: 2000 m

[Answered] What is the genotype of a person with cystic fibrosis? Cystic fibrosis (CF) is a recessive genetic disorder. The recessive allele is shown as \( f \) and the dominant allele as \( F \). What is the genotype of a person with cystic fibrosis?

[Answered] Name the energy resource that involves extracting heat from rocks.

[Answered] A car traveling at 22.4 m/s skids to a stop in 2.55 seconds. Determine the skidding distance of the car.

[Answered] A bike accelerates uniformly from rest to a speed of 7.10 m/s over a distance of 35.4 m. Determine the acceleration of the bike.

[Answered] A plane has a takeoff speed of 88.3 m/s and requires 1365 m to reach that speed. Determine the acceleration of the plane and the time required to reach this speed.

[Answered] Magnesium (Mg) is located to the right of sodium (Na) because Mg has... a.) Fewer electrons b.) Fewer protons c.) Both a.) and b.) d.) None of the above.

[Answered] A jump rope is shaken, producing a wave with a wavelength of 0.5 m, with the crest of the wave passing a certain point 4 times per second. What is the velocity of the wave?

[Answered] A stone falls from the top of a 125 m high cliff. How long does it take to reach the sea? Given: - Distance, [tex]S[/tex] = 125 m - Acceleration, [tex]A[/tex] = 10 m/s² To find the time, an additional piece of information such as the final velocity or initial velocity is needed.