A sound wave of 70 cm travels 840 m in 2.5 sec. What is the velocity and frequency of sound?

12) Photosynthesis is a chemical reaction where carbon dioxide and water react to form glucose (C6H12O6) and oxygen gas. Which represents the proper balanced equations for photosynthesis?

Which is brighter in our sky, a star with apparent magnitude 5 or a star with apparent magnitude 15?

Steam enters a counterflow heat exchanger operating at steady state at 0.07 MPa with a specific enthalpy of 2431.6 kJ/kg and exits at the same pressure as saturated liquid. The steam mass flow rate is 1.5 kg/min.

You are given two metal spheres mounted on portable insu- lating supports. Find a way to give them equal and opposite charges. You may use a glass rod rubbed with silk but may not touch it to the spheres.

Which of the following would a successful organism have adaptations to deal with? A) Cold climate B) Predators C) Difficult-to-find prey D) All of the above

Are the objects described here in static equilibrium, dynamic equilibrium, or not in equilibrium at all? a. A girder is lifted at constant speed by a crane. b. A girder is lowered by a crane. It is slowing down. c.

What kind of friction is shown between the skydiver and the air?

When charging an object by conduction, what happens to the charges in the object? A. Electrons move, giving the object a static charge. B. The object is forced to generate extra electrons because of the electric field. C.

If an atom has 5 protons and 6 electrons it's charge

N object moves in a circular path at a constant speed. what is the relationship between the directions of the object's velocity and acceleration vectors?