The concentration of carbon monoxide in an urban apartment is 48μg/m3. What mass of carbon monoxide in grams is present in a room measuring 10.6ft*14.8ft*20.5ft?

You cover 10 meters in a time of 1 second. Is your speed the same if you cover 20 meters in 2 seconds?

Was this pen given to you by him change into active

If two objects are in thermal equilibrium, do they have the same thermal or internal energy?

How do the earth's physical features affect people's activities? a. choice of occupation b. method of transportation c. recreational activities d. all of the above e. none of the above

A seismogram shows that P waves travel a. at the same speed as surface waves. b. more slowly than S waves. c. at the same speed as S waves. d. faster than S waves.

A wave has a wavelength of 50 m and a speed of 200 m/s. What is the frequency of this wave in hertz?

A 75.0 kg person stands on a scale in an elevator. (a) What does the scale read (in N and in kg) when the elevator is at rest?

Which of the following best describes the earth's average surface temperature for the past 900,000 years? A. a steady warming trend B. fairly steady temperatures until recently C. prolonged periods of cooling and warming D.

A capacitor with initial charge q0 is discharged through a resistor. What multiple of the time constant τ gives the time the capacitor takes to lose (a) the first 1/8-th of its charge (b) 7/8-th of its charge?

A sheet of paper has a mass of 5 grams. The paper is dropped from a high building twice (it reaches terminal speed in both cases), once as a flat paper of area 600 cm2 and once crumpled as a ball of radius 2 cm.