match the following terms with the descriptions concerning the study of light. incandescent, fluorescent, candela, newton, hygens, translucent. a. frosted glass and wax paper, b. glow due to radiation c. light is a particle d. light is a wave e. brightness of a source f. glow due to heating

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

What is the orbital period of a spacecraft in a low orbit near the surface of mars? the radius of mars is 3.4×106m.

An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2