A city located on the coast of North America has warmer winters and cooler summers than a city at the same elevation and latitude located near the center of North America. Which statement best explains the difference between the cities' climates? A) Wind speeds are usually greater over land surfaces than over ocean surfaces. B) Ocean surfaces have a lower specific heat than land surfaces. C) Warm, moist air raised when it meets cool, dry air. D) Ocean surfaces change temperature more slowly than land surfaces.
What is the average distance, in millions of kilometers, from the Sun to the asteroid belt? A) 85 B) 503 C)189 D)129 Why?
PHYSICS: ACCELERATION QUESTIONS 1) An egg is thrown vertically downward from a window. If the egg was released with a velocity of 10.0m/s and it strikes the ground at a velocity of 25.0 m/s, how long did it take the egg to reach the ground ? 2) An object is dropped from the roof of a building. If the object takes 2.5s to reach the ground, what was the velocity of the object when it reached ground? Thank you so much. :P And for this question An object accelerates uniformly at a rate of 1.50m/s^2 [E] for 10.0s. If the velocity of the object reaches 25.0m/s [E] at this time, what was the initial velocity? Apparently the answer for that is 10.0m/s [E], but I keep getting -10.0 Thank you so much to anyone who could help!
If the rifle is stopped by the hunter’s shoulder in a distance of 3.16 cm, what is the magnitude of the average force exerted on the shoulder by the rifle? Answer in units of N. mass of bullet= 0.0137 kg velocity of bullet= 546 m/s to the right mass of rifle= 3.82 kg recoil speed of the rifle as the bullet leaves the rifle= 1.958167539 m/s
What net external force is required to accelerate a 155kg automobile form rest to a speed of 100km/hr in 10 seconds?
2. A biologist measures the speed of a swimming amoeba. The amoeba covers a distance of 17.36 microns in 30 seconds. The biologist wished to compare the speed of the amoeba with the speeds of other animals, but the speeds of other animals are listed in kilometers per hour. What is the speed of the amoeba in kilometers per hour? (1 micron = 1 × 10–6 m) Use scientific notation, and express your answer to the correct number of significant figures. You must show your work for full credit.
if the same amount of work needed to keep a 100W light bulb lit for one hour could be used to lift a 2000 kg SUV, what height could it be lifted to?
