A train whistle is at a higher pitch (note) as it approaches you and then drops to a lower pitch as it moves away. This effect is called A) the Eiffel effect. B) the Doppler effect. C) the genesis effect. D) the electromagnetic spectrum.

What force is needed to give a 4.5 kg bowling ball an acceleration of 9 m/s^2

4 Select the correct answer. Which of the following is evidence of the past existence of glaciers? A. rift valleys B. fjords C. estuaries D. oceanic ridges

What will happen if more solute is added than can be dissolved.

A rock is thrown down with an intial speed of 10.0 m/s from a bridge in the water. it takes 2.75 s for the rock to hit the water? find the speed of the rock as it hits the water, and how high is the bridge above the water?

a storm surge is characterized by? (a) large hail (b) strong winds (c) severe lightning (d) coastal flooding

Which statement about ammeters and voltmeters is true? A. Current and voltage are the same throughout a circuit so where you place the ammeter and voltmeter doesn't matter. B.

Teens realize that things may be "shades of gray" after they enter Piaget's social stage. identity crisis stage. menarche stage. formal operational stage.

Technician A says that fractured rods have a unique mating surface and that only the cap that was fractured is the one that will fit that rod. Technician B says that a powdered metal rod is less expensive, lighter, and as strong as a forged rod.

What is the expected wavelength (in cm) of 10.5 ghz microwaves in free space?

There are 5,280 feet in 1 mile and 12 inches in one foot. How many inches are in a mile?