An electromagnetic wave traveling in a

vacuum has a wavelength of 2m.

Calculate the frequency of this wave.

The speed of light in a vacuum is c.

a) 1.5 x 108 Hz

b) 6.7 x 10-'HZ

c) 6.7Hz

d) 1.5 Hz

Water is more elastic than air. Why?

An object moving with a speed of 35 m/s has a kinetic energy of 1500 J. What is the mass of the object?

What is temperature? explain.

Can a bike move on a frictionless surface?

A 111.6 g sample of iron was heated from 0°C to 20°C. It absorbed 1004 J of energy. What is the specific heat capacity of iron?

If a bottle was heated what would be observed? Explain

A box with a mass of 100.0 kg slides down a ramp with a 50 degree angle. What is the weight of the box? N What is the value of the normal force? Round the answer to the nearest whole number.

How does thermal energy heat a house? What devices and systems are involved?

A skater with an initial speed of 7.68 m/s stops propelling himself and begins to coast across the ice, eventually coming to rest. Air resistance is negligible. (a) The coefficient of kinetic friction between the ice and the skate blades is 0.105.

A. A PH202 student lives next to a construction site and sees a crane with a wrecking ball demolish the building next door. The wrecking ball swings along the wall between her house and the neighbor's house.