Through with one of the following mediums is the velocity of a sound wave the greatest?

A. Steel

B. Air

C. Water

D. Lead

How do you calculate the effective resistance in a parallel circuit?

How does the weight of a paper airplane affect the distance it will travel

What is the effect of sunlight on the earth? A. Sunlight warms the earth evenly. B. Sunlight warms the poles more than the equator. C. Sunlight warms the earth unevenly. D. Sunlight warms the poles first and then the equator.

Which feature of an object affects its weight? Select three options. A. mass of the object shape of the object B. shape of the object C. location of the object D. how much energy the object has E. how much force Earth exerts on the object

An AC generator has 80 rectangular loops on its armature. Each loop is 12 cm long and 8 cm wide. The armature rotates at 1200 rpm about an axis parallel to the long side. If the loop rotates in a uniform magnetic field of 0.

How does the overtone number relate to the standing wave pattern number

Which of the following statements about Em waves is true? A. Em waves all have the same speed B. Em waves all have the same wavelength C. Em waves only travel through water D. Em waves all have the same amount of energy

A teacher has asked four students to state a scientific theory. Which student is correct?

What are the two main currents that affect the US on the east and west coast?

What role do volcanoes play in the flow of energy and cycling of matter on earth?