What does sound travel throu better

Which of the following are generally characteristic of carbon/graphite fiber composites?1. Flexibility. 2. stiffness. 3. high compressive strength. 4. Corrosive effect in contact with aluminum. 5. Ability to conduct electricity. A. 1 and 3B.

What force must be applied to push a carton weighing 245 N up a 15.0° incline, if the coefficient of kinetic friction is 0.340? Assume the force is applied parallel to the incline and the velocity is constant.

Compare a series circuit with two bulbs to a series circuit with four bulbs. How would you expect the brightness of the two bulb circuit to compare to the brightness of the four bulb circuit? A. All of the bulbs would be equally bright. B.

What is the coefficient of static friction if it takes 34n of force to movea box that weighs 67n?

Alicia can row 6 miles downstream in the same time it takes her to row 4 miles upstream. She rows downstream 3 miles/hour faster than she rows upstream. Find Alicia's rowing rate each way. Round your answers to the nearest tenth, if necessary.

Ultrasound consists of sound at frequencies most people can hear?

Ali has less mass flying in a jet high above the earth than when she stands on the surface of the earth. True False

A passenger jet flies from one airport to another 1,333 miles away in 2.2 h. Find its average speed in the mks system of units.

A string is wound tightly around a fixed pulley whose radius is 5.0 cm. As the string is pulled, the pulley rotates without slipping. What is the angular speed of the pulley when the string has a linear speed of 5.0 m/s?

If an astronomical light source were moving toward us, then what would be observed? (a) a blue shift (b) a shift toward longer wavelengths (c) a shift toward lower frequencies (d) a sonic boom