An amusement park designer wants his swing to have a centripetal

acceleration of 19 m/s2. If the velocity of the swing is 17 m/s, how long

should the chain on the swing be?

O

A. 14.8 m

O

B. 14.0 m

15.2 m

13.6 m

One liter (1000cm3) of oil is spilled onto a smooth lake. If the oil spreads out uniformly until it makes an oil slick just one molecule thick, with adjacent molecules just touching, estimate the diameter of the oil slick.

The equivalent resistance of a complex circuit is usually determined by

What minerals attracts iron nails?

How does u-235 become u-236?

Which of the following types of electromagnetic radiation has the longest wavelength? choose one answer. a. ultraviolet rays b. red light c. gamma rays

This particle is found in the nucleus and adds mass to the nucleus, but changing its number does not change what the element is. This particle is the A. proton. B. photon. C. neutron. D. electron.

Projectile motion is an example of what kind of motion

What can change scientific knowledge?

6. What is ductility?

During practice, a baseball player hits a very high fly ball, and then runs in a straight line and catches it. Which had the greatest displacement during the time period from the hitting of the ball to its catching