Why a pc monitor is covered with dust?

When Maggie applies the brakes of her car, the car slows uniformly from 15.3 m/s to 0 m/s in 2.23 s. How far ahead of a stop sign must she apply her brakes in order to stop at the sign? Answer in units of m

If 53.62 ml of an oil weighs 48.34 g what is the specific gravity of the oil

What will happen to a waves frequency if it's speed increases and it's wavelength remains the same?

When work is done and a force is transferred which choice describes the movements of the object?

A rock is dropped from a height of 2.5 meters. What is it's velocity when it reaches the ground? 3.5 meters/second

the half-life of carbon - 14 is 5730 years. What fraction of carbon-14 would remain after 11,460 years?

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.