Why a pc monitor is covered with dust?

What is the biggest barrier to the use of renewable energy in the United States? Reliability and consistency Citizen opposition to negative environmental impact Limited transmission capacity to deliver the energy to the consumer Limited renewable

The purpose of studying a system is to identify the strengths and weaknesses of the existing system and examine current inputs, outputs, processes, security and controls, and system performance.

A ham radio operator broadcasts at a frequency of 3.0 * 108 Hz. The speed of an electromagnetic wave is a constant, 3.0 * 108 m/s. What is the wavelength? 6.0 m 9.0 m 1.0 m 0.1 m

Is the refraction different entering medium that has a higher index of refraction compared to entering amedium that has a lower index of refraction?

Similar to what you see in your textbook, you can generally omit the multiplication symbol as you answer questions online, except when the symbol is needed to make your meaning clear. For example, 1⋅105 is not the same as 1105.

A 6.0-kg ball is sliding to the right at 25.0m/s and strikes a second ball (15-kg) that is initially at rest head-on. After the collision, the 6-kg ball moves to the left at 12.5m/s. What is velocity of the second ball?

At a certain harbor, the tides cause the ocean surface to rise and fall a distance d (from highest level to lowest level) in simple harmonic motion, with a period of 12.4 h. how long does it take for the water to fall a distance 0.

What is the average speed of an object with a total distance traveled of 45 meters in 50 seconds

Some machines do not multiply the force that is applied to them

An automotive research facility is testing a new design on bumpers to determine the force at which it will break.