Which of the following was a common life form during the Cambrian Period?

trilobite

bryozoan

land plant

cephalopod

Antibodies are parts of a wave that do not move when the wave is in phase? T OR F

During a softball game, a batter hits a ball upward from an initial height of 3 feet. the height, in feet, of the softball is given by s (t) = - 16t+70t+3, where t is the time in seconds and t>=

Use the dimensions of a small soft drink bottle to calculate its fundamental resonant frequency when empty. Assume the bottle is 17 cm tall. It forms a closed-end pipe.

How can we determine the strength of a sonic boom?

The heat exchange in chemical reactions is due to a change in: -kinetic energy -enthalpy -temperature -physical properties

A set of data is collected from a simple circuit with a 20 resistor and is represented in the table

A skydiver of mass m jumps from a hot air balloon and falls a distance d before reaching a terminal velocity of magnitude v. Assume that the magnitude of the acceleration due to gravity is g. a.

8. What happens to force when mass is increased?

Give an example of ionic and covalent bond, and explain and make an example for each.

Which of these is the best reason for proper nutrition? A. To ensure that you will be skinny B. To protect yourself against certain diseases C. To improve your intelligence D. To ensure that you will get good grades