An blank is an object that allows only some electrons to go through it

A microscope that uses light and more than one lens

Calculate the amount of energy (in kJ) necessary to convert 497 g of liquid water from 0°C to water vapor at 167°C. The molar heat of vaporization (Hvap) of water is 40.79 kJ/mol. The specific heat for water is 4.184 J/g · °C, and for steam is 1.

A student walks 3 miles west and then 4 miles south to get to school the student displacement was

Which of these results from the particles of gases being farther apart than the particles of liquids? A. Gases take the shape of their containers but liquids do not. B. Liquids fill the volume of their containers but gases do not C.

We cab calculate work because we know the force and distance. what else would we need to know to calculate power

What is the momentum of a 0.145 kg baseball traveling at 40.0 m/s

To analyze the motion of a body that is traveling along a curved path, to determine the body's acceleration, velocity, and position. A motorcyclist travels around a curved path that has a radius of 250 ft.

You walk with a velocity of 2 m/s north. You see a man approaching you, and from your frame of reference he has a speed of 3 m/s to the south.

Imagine you are holding an apple. Does this apple have energy? how do you know?

Explain how inertia and the shape of a loop counteract the force of gravity to keep riders from falling out when a roller coaster goes through a loop traveling upside down