Energy is the ability to do work. All of the following describe work being done EXCEPT: Select one:

a.
blowing out a candle's flame

b.
holding a heavy bowling ball

c.
lifting a mug of hot chocolate

d.
wiping dust off a coffee table

Aspecial electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. the sensor measures the magnitude of the normal force that the seat exerts on a rider. the loop-the-loop ride is in the vertical plane and its radius is 23 m. sitting on the seat before the ride starts, a rider is level and stationary, and the electronic sensor reads 740 n. at the top of the loop, the rider is upside down and moving, and the sensor reads 370 n. what is the speed of the rider at the top of the loop?

Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c

What distance does a car travel as its speed changes from 0 to 20 m/s in 17 s at constant acceleration?