Why you think sharks need to detect these changes to survive.

What is the speed of a train that goes 1,000 km in 5 hours?

Clothes dryer uses about 3:00 amps of current from a 240-volt line how much power does it use

What is the best description of the destructive interference of light? A. a longitudinal wave meets transverse light wave B. two waves have the same direction of displacement C. a mechanical wave meets an electromagnetic wave D.

It was a dark and stormy night, when suddenly you saw a flash of lightning. five-and-a-half seconds later you heard the thunder. given that the speed of sound in air is about 340 m/s, how far away was the lightning bolt?

A 10 kg falling object accelerates downward at 9.8 meters per second per second. What is the force acting on the object? A. 9.8 N B. 10 N C. 98 N D. 100 N

What is area and perimeter

You are given three iron rods. Two of the rods are magnets but the third one is not. How could you use the three rods to definitively identify the unmagnetized rod?

A suitcase had a width of 55 cm. Which unit conversion fraction should you use to find the width in inches? A. 1 cm/2.54 in B. 1 in/2.54 cm C. 2.54 cm/1 in D. 1 in/1 cm

Which equation relates charge, time, and current? answer A / l = triangle q/t

Martha is measuring the barometric pressure in her back yard every thirty minutes. She records her data in the table below.