Vibrations cause sounds yet if you move your hand back and forth through the air, you don't hear a sound. Why?

The gauge pressure in a car tyre is 300 kPa at 20°C. After moving at high speed, the tyre has heated p and its pressure is 330 kPa. What is the temperature of air in the tire? Assume the atmosphere pressure to be 101 kPa. (Ans: 315.08 K)

A balsa wood raft is 1.50 m long, 1.00 m wide, and 0.120 m high. the density of balsa is 380 kg/m^3. what is the mass of the raft? (unit=kg)

Compare and contrast mechanical and electromagnetic waves

12080 gallons per month into liters per hour

The volume occupied by three milliliters of water is the same as three cubic centimeters of water

What changes would a cold front bring to an area with warm, dry weather? extended period of rain or snow several days of gray skies dry air and sunny skies rain or thunderstorms

Candace is a confident, disciplined, motivated, hardworking team player. She pushes her teammates to perform to their full potential but guides them and does not control them. What does Candace's commitment to her team show?

Windows that look into bathrooms are often translucent instead of transparent. Why?

Which of the following does culture contribute to the preferences and behaviors of consumers?

Anna bought a tangle fish and two rainbow fish for her aquarium the rainbow fish cost $6 more than the angelfish if she paid a total of $37 what is the cost of the angel fish