swinging pendulum

Draw a simple pendulum and label the locations of the maximum and minimum of (a) speed (b) acceleration (c) kinetic energy (d) potential energy

Understanding momentum, impulse and forces in the sport of soccer.

1. Identify and explain propulsive and breaking forces in soccer? 2. Provide three examples where momentum influences soccer? 3. In soccer, outline how impulse can be increased. These questions are for a post-grad degree in elite sports coaching - (biomechanics module)

Electrostatic Energy

1. A negative charge in an electric field moves from a point where the potential is zero to a point whre it is -100V. Discuss the energy change and the work done. 2. Imagine a hollow, spherical, positively charged conductor of radius R that is far away from any other bodies. Draw a graph of its potential V as a function of r out from its center. Discuss your results. 3. With question 2 in mind, suppose we place a neutral hollow conducting sphere in the vicinity of the charged sphere. Draw a rough graph of the potential along the center line of both spheres, and compare it to the previous potential without he neutral conductor. Discuss your results. 4. Describe the potential of a neg... click for more

Understanding curved motion.

Fill in the blank: A moving object's ________ causes it to travel in a straight line.

Physical Optics

Q: If you put a few drops of liquid in a cup of soap with a little water and shake it around, making a great froth of bubbles. After several seconds, the bubbles will begin to show bright rainbow color patterns. Why must you wait before the colors appear? Q: If you take a very close look at a worn surface under direct sunlight. A fingernail, an old coin, or the roof of an old car will all show a very fine granular pattern of tiny colored dots. This phenomenon is the so-called "speckled effect". What might be it's cause? Notice how it seems to move as you slowly move your head parallel to the surface. Multiple choice: 1. Natural light is light that is: (a) only found in nature (b) line... click for more