Attention and interest: a. What are some variables when it comes to attention?
b. What can we do when we need to pay attention to something that doesn’t hold our interest?
c. Is it possible to learn without attention? Without interest?

How would you place two electrons on a sphere of radius r so that the electrostatic potential energy is minimized. how would you place three electrons to solve the same problem.

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n

Which branches of natural science include the study of an organism that lived 10 million years ago