A commuter train blows its 200-Hz horn as it approaches a crossing. The speed of sound is 335 m/s. An observer waiting at the crossing receives a frequency of 207 Hz. What is the speed of the train?

Match the terms correctly Lithium A) Highly reactive gas Lead B) Nonreactive gas Fluorine C) Malleable, soft, and shiny Krypton D) Opaque solid with higher density

When a magnet is moved through a coil of wire, an electric current is generated in the coil because

A projectile is shot from the edge of a cliff 160 m above ground with an initial speed of 55.0 m/s at an angle of 40° below the horizontal. How much time does it take the projectile to hit the ground?

The wetland where a species of a wading bird nests and hunts for food is drained to make way for a housing development. This is an example of A. selective cutting B. habitat destructing C. conservation D. habitat fragmentation

What do we call the substances that are formed as a result of substances reacting together? Group of answer choices A) none of the answers are correct B) catalysts C) products D) reactants

A ball is thrown with a velocity of 20 m/s at an angle of 60 degrees above the horizontal. What is the horizontal component of its instantaneous velocity at the the exact top of its trajectory?

You pull on a wagon resting on the sidewalk. What will happen next. A. The wagon does not move because the wagon applies more force to you than you apply to the wagon. B. The wagon moves because you apply more friction to the ground. C.

If someone travels 3000 feet in one second, how far will it travel in 18 minutes

How long did it take to reload a rifle during the 18th 19 century?

Oil flows upward in the wick of a lantern because of the liquid property called A. meniscusity. B. capillarity. C. density. D. viscosity.