Transmission of messages in a communication is:

A. a one-way street.

B. a two-way street.

C. only through a medium.

D. any which way.

What is the atmosphere of Ganymede made up of?

What is conduction?

What does the ear drum do when sound waves reach it?

Tim and Rick both can run at speed v_r and walk at speed v_w, with v_r > v_w They set off together on a journey of distance D. Rick walks half of the distance and runs the other half. Tim walks half of the time and runs the other half.

A 0.3-kg ball has the velocity of 20 m/s. what is the kinetic energy of the ball?

As you catch a fast-moving fastball, why is it wise to move yourhand in the direction of the ball's motion? Explain in terms ofwork and energy.

What is the dot product of a = - 2i - 5j and b=i - 4j

A race car driver must average 200 km/hr for four laps to qualify for a race. because of engine trouble, the car averages only 170 km/hr over the first two laps. what average speed must be maintained for the last two laps?

A machine has a mechanical advantage of 5. if 300 newtons of input force is used to produce 3,000 newton meters of work what is the output force and what is the distance over which the work is applied

An experiment in your science class lists the materials needed for the lab. It is your job, as a lab partner, to measure out 25 mL of distilled water and 2.5 grams of magnesium.