Questions 1. Find the Volume of a piece of wire with Length of wire, L= 50cm and diameter of wire, d = 0.35 mm.
2. Find the volume of a pendulum Bob with a diameter of 18.35 mm.

Use π = 22/7.

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What is the frequency of a light wave with a wavelength of 620nm

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?