What is the speed of sound in air with a temperature of 25 degrees C

Which of the following most accurately represents John Dalton's model of the atom?

How much force is needed to accelerate a bicycle and rider with a total mass of 80 kg at a rate of 2.0 m/s2? A. 20 N B. 160 N C. 320 N D. 40 N

Why is the electromagnetic spectrum called a spectrum?

What hot springs in the ocean floor

Why is the formation of sand a physical change

What happens to the resistance of a wire as its length increases? A. The resistance decreases. B. The resistance is not affected by a change in wire length. C. The resistance alternates between high and low values. D. The resistance increases.

What is true about molecular compounds that dissolve in water

What is a lenticular (S0) galaxy? A galaxy with a disk and central bulge like a spiral galaxy, but with no spiral arms A galaxy with a smooth brightness profile, lacking the central bulge and disk of a spiral galaxy A spiral galaxy with fuzzy and

Which process causes wells on land to become saline, making them unusable for drinking water? A. Erosion B. Echo sounding C. Eutrophication D. Groundwater infiltration

A farmer uses a tractor to pull a 150 kg bale of hay up a 15∘ incline to the barn at a steady 5.0 km/h. The coefficient of kinetic friction between the bale and the ramp is 0.40. Part A What is the tractor's power output?