A sound wave that has a wavelength of 2 m in room-temperature air has a frequency of about

A. 170 Hz.

B. 1360 Hz.

C. 2040 Hz.

D. none of the above

Which of the following statement describes an actual orbit A. The planet Venus is a satellite of earth. B. Earth is a satellite of the planet Venus. C. Earth is a satellite of the moon. D. The planet Jupiter is a satellite of the sun.

What Could be the control in an experiment to measure the effects of gas additives on fuel

Stars which never disappear below the horizon are called__stars. A. Polaris B. visible C. constellation D. circumpolar

About twenty percent of the national football league weighs more than 300 pounds. at this weight, their body mass index (BMI) places them at grade 2 obesity, which is one step below morbid obesity.

If I move 15ft foward, 15 ft backwards, 15 ft to the right, 15ft to the left where am I?

A wire carries a steady current of 2.20 A. A straight section of the wire is 0.750 m long and lies along the y axis within a uniform magnetic field, vector B = 1.70 k T.

All parts of the electromagnetic spectrum share travel at the same speed through empty space. True False

What is the mechanical advantage of the frictionless plane shown below? Inclined plane A. 0.64 B. 1.31 C. 1.4 D. 1.56

What does ice become when it absorbs enough heat energy. C. Frost. D. Liquid

Steam enters an adiabatic turbine steadily at 3 mpa and 400°c and leaves at 50 kpa and 100°c. if the power output of the turbine is 2 mw, determine (a) the isentropic efficiency of the turbine and (b) the mass flow rate of the steam flowing through