The human immune system fights infection by releasing

1. ATPs

2. Antibiotics

3. Antibodies

4. Antigens

The universal force that is effective over the longest distance is?

If the blocks are released from rest, which way does the 10 kg block slide, and what is its acceleration? Enter a positive value if 10 kg block accelerates up the rump, and a negative value otherwise.

If you create and plant rows that are perpendicular to the slope of fields instead of up and down slopes to prevent erosion you are

What one advantage of doing a field experiment instead of a laboratory experiment? A. There are no variables when you do a field experiment. B. It is easier to control variables in a field experiment. C.

What is 9*9 if you multiply

My Notes A basketball rolls across a classroom floor without slipping, with its center of mass moving at a certain speed. A block of ice of the same mass is set sliding across the floor with the same speed along a parallel line.

How does sound travel through waves?

Solve for real t: - 25=20t-5t^2

Contrast balanced and unbalanced forces.

A wave will travel only as long as it has energy