Why does Refraction occur? What is Refraction?

Tell me how length effects the resistance of an electric current?

Which explains how winds cause surface currents? A. Winds cool the surface water. As the water sinks, it creates surface currents. B. Friction between the blowing air and the water drags the water along and creates surface currents. C.

A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at 22.0 m/s and returns the shot with the ball traveling horizontally at 35.5 m/s in the opposite direction.

A 113 ‑turn circular coil of radius 2.71 cm and negligible resistance is immersed in a uniform magnetic field that is perpendicular to the plane of the coil. The coil is connected to a 10.3 Ω resistor to create a closed circuit.

You are wallpapering two walls of a room. One wall measures 15 ft by 12 ft and the other measures 9 ft by 12 ft. The wall paper costs $19.40 per roll, and each roll covers 50 square feet. What does it cost to cover the two walls?

A main sequence star cools and expands. It must be entering which stage? A. white dwarf B. black dwarf C. red giant D. neutron star ... ?

Question 1: A man trailing a trolley bag and suddenly, the wheels of the trolley bag get locked. The man realises that he has to put extra effort to drag the bag. The man finds it difficult to drag the bag because

A body is thrown up with a velocity of u ... it reaches maximum height of h ... if its velocity is doubled the maximum height it reaches is?

A heating pad has several strips of heater wire connected in parallel. Consider eight of the wires, each with 4Ω resistances, connected to a 12V power source. given this scenario answer the following questions A.

Who first arranged the elements according to atomic mass and noticed a periodic recurrence of their physical and chemical properties? A. Henry Moseley B. Antoine Lavoisier C. John Dalton D. Dmitri Mendeleev