The angle at which a wave strikes a surface is ___ the angle at which the wave is reflected.

Which is correct

A.) equal to

B.) smaller than

C.) larger than

D.) perpendicular to

The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0∘ above the horizontal, some of the tiny critters have reached a maximum height of 58.7 cm above the level ground.

The electric field of a sinusoidal electromagnetic wave obeys the equation E = (375V/m) cos[ (1.99*107rad/m) x + (5.97*1015rad/s) t]. a. What is the amplitude of the electric field of this wave? b.

What type of UTP cabling is used in building open-air returns to reduce the amount of toxic components emitted into the air if a fire should occur?

A positive charge on an object is caused by: an excess of protons an excess of electrons a deficiency of protons a deficiency of electrons

Explain the relationship between distance and time in terms of an object's speed.

A gate in an irrigation canal is constructed in the form of a trapezoid 2 m wide at the bottom, 38 m wide at the top, and 2 m high. It is placed vertically in the canal so that the water just covers the gate.

A machine with a mechanical advantage of 10 is used to produce an output force of 250 newtons. What input force is applied to this machine

Why do you float in space

How does physical change affect the identity of a substance

A scientist pours grape juice on three identical white shirts He then uses three different cleaning products on the shirts and measures how clean they get what is the independent variable in this experiment