An open system is a system in which both matter and energy are exchanged with the surroundings.

a. true

b. false

A space vehicle is traveling at 4150 km/h relative to the Earth when the exhausted rocket motor (mass 4m) is disengaged and sent backward with a speed of 79 km/h relative to the command module (mass m).

Lenses are described as convergent or divergent depending on how they refract light. What is the difference between these two types of lenses?

Which of the following items would have the lowest density? OA. A 12 cm3 block of aluminum with a mass of 2 grams OB. A6 cm3 block of ice with a mass of 4 grams OC. A 12 cm3 block of wood with a mass of 3 grams OD.

If a rocket travels at 5600. km in 3.00 hours, what is the speed

Consider the incomplete equation below Superscript 4 subscript 2 upper H e plus superscript 4 subscript 2 upper H e right arrow question mark.

Electrons are a lot lower in mass than neutrons true or false

How can you measure mold on food?

The cooled lava pools on the surface of a crater are called what? 1. Craters 2. Terrae 3. Maria 4. Reoglith

A child walks 35 meters in 7 seconds. calculate the child's speed.

Is this wave transverse or longitudinal