Work is being done when

a. You apply a force to an object.

b. An object is moving after you apply force to it.

c. You exert a force that moves an object in the direction of the force.

d. You do something that is difficult.

When analyzing a system in physics, what must be included next to measurable quantities?

What two minerals would be most useful as grains on sandpaper

You observe a very large and very hot star in the constellation orion. on the same night, you observe another star in orion that is much smaller but has the same temperature. which star is more luminous?

Predict what metallic compound forms when sulfuric acid reacts with magnesium metal

A. particles that travel parallel to the direction of energy movement

Two slits in an opaque barrier each have a width of 0.020 mm and are separated by 0.050 mm. When coherent monochromatic light passes through the slits the number of interference maxima within the central diffraction maximum: Group of answer choices

How much work is done if a 50. ON force is applied on an object in the direction of motion while the object slides 3.00 m across the floor?

A transverse wave on a rope is given by y (x, t) = (0.750cm) cos (π[ (0.400cm-1) x + (250s-1) t]). find the period

Which best describes why a physical change differs from a chemical change? A. A physical change predicts the behavior of a substance when in a reaction, whereas a chemical change is used to identify characteristics of a substance. B.

You are watching children play a game of tug-o-war with an old plastic clothesline. The two teams are pulling at opposite ends of the cord and each team is trying to drag the other team into a mud puddle that lies between them.