Which best describes a reference frame?

A. a distance over which an object moves

B. the difference between start and end velocity

C. a position from which something is observed

D. the average speed of a group of objects

Jayden was given a marshmallow and a syringe in class to experiment with. She placed the marshmallow in the syringe and sealed the end. When she depressed the plunger of the syringe what happened to the marshmallow and why?

What affects how an object falls toward earth?

During an elbow flexion exercise, the relative angle at the elbow is 118 degrees at 0.67 seconds and 82 degrees at 0.75 seconds. What is the average velocity of the elbow in degrees / seconds?

I) sin^2 A sec^2 B + tan^2 B cos^2 A = sin^2A + tan²B

Which landform is with steep sides and flat top that rises hinge into the air?

Steam enters an adiabatic turbine steadily at 3 mpa and 400°c and leaves at 50 kpa and 100°c. if the power output of the turbine is 2 mw, determine (a) the isentropic efficiency of the turbine and (b) the mass flow rate of the steam flowing through

StA A boat takes off from the dock at 2.5 m/s and speeds up at 4.2 m/s2 for 6.0 s. How far has the boat traveled? Round your answer to the nearest whole number.

Which inventor created a delivery system for electricity that was deemed safer than Thomas Edison's system? a. Henry Flagler b. George Proctor c. George Westinghouse d. Thomas DeSaille Tucker

Which is the most closely related to the color of an acid-base indicator when dipped into solution? A.) The hydronium ion concentration in the solution. B.) The total amount of solution present. C.) The number of water molecules in the solution. D.

If a cell is placed inside a solution that has a higher concentration of solute than on the inside of the cell, what can be said about the movement of water? a. Water will move out of the cell, causing it to swell. b.