Nancy would like to find out how air temperature affects the rate of evaporation of water. Which of the following tools should Nancy include in her experiment’s design?
A.
stopwatch and forceps
B.
thermometer and graduated cylinder
C.
meter stick and balance
D.
spring scale and hand lens

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

What is the efficiency of an engine that does 80 j of work and exhausts 320 j of heat while taking in 400 j of heat ? a. 10% b. 20% c. 80% d. 25%