What is the comet's tail made of?

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