I live in the city. It's always warmer in the city, compared to other areas, even at night. Why is that?
A.) The rain shadow effect makes surrounding areas cool and moist and the city warm and dry.
B.) Buildings absorb and retain heat from the Sun, producing the urban heat island effect.
C.) Lake effect snow only affects areas outside of the city.
D.) The city receives lake effect snow.
2. What can you say about the total momentum before and after the collision?
3. What do you think would happen to the velocity of each ball after the collision if the masses and initial velocities of each ball were the same?
4. The mass of ball A is 10 kilograms and the mass of ball B is 5 kilograms. If the initial velocity is set to 3 meters per second for each ball, what is the final velocity of ball B if the final velocity of ball A is 2 meters per second? Use the elastic collision equation to find the final velocity of ball B. Assume ball A initially moves from right to left and ball B moves in the opposite direction. Identify each mass, velocity, and unknown. Show your work, including units, and indicate the direction of ball B in your answer.
5. If the mass of each ball were the same, but the velocity of ball A were twice as much as ball B, what do you think would happen to the final velocity of each ball after the collision? To answer this question, create a hypothesis in the form of an if-then statement. The “if” is the independent variable, or the thing that is being changed. The “then” is the dependent variable, or what you will measure as the outcome.
(Please show your work if you can)
The amount of water vapor in the air is 90% of what the air can hold.
The dew point temperature is 90% of the air temperature.
The temperature must rise in order for air to become saturated with water vapor.
Answer:
The amount of water vapor in the air is 90% of what the air can hold.
Explanation:
The answer is A
Answer: The answer is B: The amount of water vapor in the air is 90% of what the air can hold
b. false
B. 6 N
C. 135 N
D. 1,350 N
A = B
A< B
It will not slow down, but continue moving at constant velocity.
Answer:
Explanation:
A work pulls the crate by horizontal force on it
Now due to this applied force crate is moving horizontally with uniform speed
so we can say that the acceleration of the crate will be zero
now by Newton's II law we can say
so here we will have
here we know that applied force is A
so F = A
and friction force is B
so correct relation is