Why does a fluid become less dense when it is heated?

I AN TIMED, HURRY! What is the buoyancy force on a 15 g object which displaces 60 mL of water? (Remember to change mL of water to grams and grams to kg) A) 900 N B) 25 N C) 0.59 N D) 0.25 N

How does the relative motion of a motorcycle affect the frequency of the sound heard by an observer on the sidewalk? As the motorcycle approaches the observer, the frequency drops. As the motorcycle approaches the observer, the frequency increases.

A circular loop of wire of cross-sectional area 0.12 m2 consists of 200 turns, each carrying 0.50 A. It is placed in a magnetic field of 0.050 T oriented at 30° to the plane of the loop. What torque acts on the loop?

What would the potential of a standard hydrogen electrode (s. h. e.) be under the given conditions? [h+]=0.46 mph2=1.9 atmt=298 k?

As a snowboarder descends a mountain slope, gravity, the normal force, and friction combine to exert a net force of 320 N in the downhill direction. The net force does 4700 J of work on her during one segment of her descent.

Soul that drains slowly and most likely has a high amount of what?

What sd can friction do to moving objects?

Why is specific heat different for different materials

What must happen for an ion To form

What type of material is inside the holes in an electrical outlet?