A bubble of air has a volume of 2.0 cm at the bottom of a lake where the total pressure is 3.0 x 10 Pa . The temperature of the water in the lake is constant. The atmospheric
pressure at the surface is 1.0 x 105 Pa
What is the volume of the bubble when it rises to the surface ?

ОА
Ов
o
D
D​

World class speed skaters can skate a 3,000-m course in about 4 minutes. what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s

Two horses begin at rest. after a few seconds, horse a is traveling with a velocity of 10 m/s west, while horse b is traveling with a velocity of 13 m/s west. which horse had a greater acceleration? a. horse a because its change in velocity was greater than horse b's in the same time. b. horse b because its change in velocity was greater than horse a's in the same time. c. horse b because its change in velocity was the same as horse a's, but it took less time. d. both horses had the same acceleration.

The dominant wavelength of energy emitted by the sun is