Many ocean dwelling animals can use sound waves to communicate with other animals and locate food and obstacles over longer distances than can land dwelling animals. How is this possible

What does the coarse adjustment knob do on a microscope?

Two resistors, R1=2.79 Ω and R2=6.37 Ω, are connected in series to a battery with an EMF of 24.0 V and negligible internal resistance. Find the current I1 through R1 and the potential difference V2 across R2.

A car traveling at 40 ft/sec decelerates at a constant 5 feet per second per second. how many feet does the car travel before coming to a complete stop?

What is the Ring of Fire? a ring of volcanoes around the Atlantic Basin a circle of mantle plumes around the Pacific Basin a chain of volcanoes that are entirely under water a chain of volcanoes circling the Pacific Basin Description

Which electromagnetic wave has the lowest frequencies (less than 3*109 hertz) ? A. microwaves B. visible light C. radio waves D. gamma rays

Which of the following is an example of applied research?

A Cadillac Escalade has a mass of 2,569.6 kg, if it accelerates at 4.65 m/s^2 what is the net force on the car?

If you are trying to balance a seesaw and you have a higher mass on the left, should the mass on the right be placed at a greater distance or lower distance to balance it? Why?

A car travels 300 km in the first 3 hours of a trip. Then it hits traffic and travels only 60 km during the last hour. What is the average speed of the car? a.) 180 km/h b.) 100 km/h c.) 90 km/h d.) 120 km/h

What is the purpose of using a wedge? A. separates objects B. keeps objects together C. allows you to exert force over a distance