Arope attached to a truck pulls a 180−kg motorcycle at 9.0m/s. the rope exerts a 400−n force on the motorcycle at an angle of 15∘ above the horizontal. a. what is the work that the rope does in pulling the motorcycle 300m? b. how will your anwer change if the speed is 12m/s? c. how will your answer change if the truck accelerates?

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions

Sasha has just gotten a new job in a nearby city. after comparison shopping, she found that renting a nice two-bedroom apartment would cost around $800 per month. her utilities would cost about $150 per month. sasha has enough money saved for a down payment, and she found that she can buy a three-bedroom house or condo with a mortgage payment of $1,000 per month, including taxes and homeowner's insurance. her utilities would cost about $200 per month. what is the advantage of buying the house over renting the apartment?

Boiling water in a pan is a good example of convection a. the warm water rises and the cooler water sinks. b. the water is touching the bottom of the pan, but not the heat source. c. boiling water can cook hard boiled eggs. d. boiling water is an example of radiation and not convection.