7. Mix equal amounts of water at 30 degrees and 60 degrees and you will ultimately get

water at

a.) 30 degrees

b.) 45 degrees

c.) 60 degrees

d.) 90 degrees

The buoyant force on an object is equal to the weight of the

Why e=mc2? why not e=mc3?

Which of the following is an advantage of burning fossil fuels for energy?

A car moving at 50 miles per hour speeds up steadily to 70 miles per hour over a period of 30 minutes. How far did it travel during the 30-minute period of acceleration?

Give a definition for a force

The revolving nosepiece of a compound microscope is used to: a. move the condenser up or down b. change the objective lens c. adjust the slide to move the object into view d. change eyepiece lenses

The motion of an object undergoing constant acceleration can be modeled by the kinematic equations. One such equation is xf=xi+vit+12at2xf=

Energy transferred as heat occurs between two bodies in thermal contract when they differ in which of the following properties? a) mass b) specific heat c) density d) temperature

When the temperature of water increases from room temperature to 90C the process of heating the water is ... adiabatic exothermic isothermic endothermic all of the above

A system absorbs 12 j of heat from the surroundings; meanwhile, 28 j of work is done on the system. what is the change of the internal energy Î'eth of the system?