If you wanted to describe an increase in volume to your class, which of the following would be the best item to use?

A. a wooden box with holes

B. a soccer ball and a pump

C. ice in a glass and a thermometer

D. a rock and a cup of water

After an explosion far away, a person working on a farm first senses vibrations in the ground, then hears the explosion. What accounts for the time between the vibrations and the noise? A) Wind slows down the noise in the air.

express the following in metres (1) 52fm (2) 26 Mm (3) 12am (4) 69 pm (5) 85 mm

An electric motor must have which of the following in order to work? galvanometer, power source, secondary coil, or primary coil

A uniform solid sphere rolls down an incline without slipping. if the linear acceleration of the center of mass of the sphere is 0.19g, then what is the angle the incline makes with the horizontal?

A traveling electromagnetic wave in a vacuum has an electric field amplitude of 50.9 V/m. Calculate the intensity? of this wave. Then, determine the amount of energy? that flows through area of 0.0277 m2 over an interval of 11.

Visualize five horizontal sedimentary strata exposed in a cliff or canyon wall identified by consecutive numbers, 1 being the lowest bed and 5 being the highest. Which of the following statements concerning the strata are true? a.

The characteristics that follow are characteristics of two of Galileo's surviving double-convex lenses. The numbers given are magnitudes only; you must supply the correct signs. L 1: front radius 950 mm, rear radius 2700 mm, refractive index 1.

Which car has the most kinetic energy? A car of mass 1500 kg with speed 5 m/s or A car of mass 1300 kg with speed 3 m/s or a car of mass 1200 kg with speed 2 m/s or a car mass 1400 kg with speed 4 m/s

A 500 kg table with 4 legs rests on solid flat ground. I place 3 books on the center of the table with masses of 10 kg, 20 kg and 30 kg respectively. What is the normal force between the ground and one leg of the table?

Fluorine-21 has a half-life of approximately 5 seconds. What percentage of the original nuclei would remain after 20 seconds