If you shout into the Grand Canyon, your voice travels at a speed of 340 m/s to the bottom of the canyon and back, and you hear an echo. How deep is the Grand Canyon at the spot where you hear an echo 5.2 seconds after?

Given that an integer variable count has already been declared and assigned a value: Write a statement that writes the value of count to standard output. Do not write anything else to standard output - - just the value of count.

An airplane is traveling due east with a velocity of 7.5 * 102 kilometers/hour. There is a tailwind of 30 kilometers/hour. What is the value of the resultant velocity of the airplane?

A wave oscillates 50 times per second. What is its frequency?

Which statements belong to Dalton's atomic theory? Select all that apply. Atoms have a massive, positively charged center. Atoms cannot be created or destroyed. Atoms cannot be broken down into smaller pieces. All atoms of an element are identical.

What is the potential energy of a 2,000-kg car parked at the top of a 30-m hill?

How to indicate kinetic energy

During induction, a positively charged rod is brought near to but not touching the electroscope. The presence of the charged object above the plate of the electroscope induces charges to move down into the gold leaves, giving the electroscope an

You are operating a boat with a power ventilation system. you have just fueled this boat. how long should you let the ventilation system run before starting the engine?

The force on a current-carrying wire is a maximum when the current is moving parallel to a magnetic field. true or false

In 1999, what percentage of 36-month-old toddlers had been toilet trained? 20 percent 40 percent 60 percent 80 percent