A1000 kg car moves as speed from 10 m/s to 30 m/s in 20 seconds. what is the average speed ? what is the acceleration ? what is the average force acting upon it ? if the car turns along a circle at speed 5 m/s around a curve 30 meters in radius , how big the centripetal force is needed ?

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

Which of these questions might a character ask if the conflict is man versus self? a. which path should i take to better myself? b. which boulder will be too heavy for me to carry? c. which friend is going to ditch me today? d. all of the above