Which of these is a pure substance?

A. cake mix

B. ocean water

C. 10 carat gold

D. solid gold

A car's position in relation to time is plotted on the graph. What is the car's average velocity? A) 5 m/s B) 10 m/s C) 30 m/s D) 50 m/s

A 1.2-kg block sliding at 5.0 m/s on a frictionless surface runs into and sticks to a spring. The spring is compressed 0.10 m before stopping the block and starting its motion back in the opposite direction. 1.

What is the force required to move a load 50kg through a distance of 1000cm in 5 seconds

A person who weighs 509,45 N empties her lungs as much as possible and is then completely immersed in water (of density 1 000 kg/m3) while suspended from a harness. Her apparent weight is now 22,34 N.

Air pressure is usually lowest during which season?

True or false: electricity follows a circular pattern?

A diver shines a flashlight upward from beneath the water (n=1.33) at a 36.2° angle to the vertical. At what angle does the light leave the water? Express your answer using three significant figures?

Which is part of an AC generator? armature transformer commutator turbine

Fossils reveal which of the following about a species or organism a. how the organism interacted with other organism b. the miccroscopic feature of the organism c. the growth stages of the organisms species d.

What are the differences between speed, velocity, and acceleration?