On a cold day, when the air temperature is 0°C, you empty your lungs and take a deep breath, filling your lungs with 4.2 L of air
If you hold your breath until the temperature of the air in your lungs reaches 37°C, what is the volume of the air in your lungs at that point, assuming the pressure does not change?
A)
4.6 L
B)
4.4 L
C)
5.0 L
D)
4.8 L
E)
5.2 L
D
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A string is stretched and fixed at both ends, 200 cm apart. If the density of the string is 0.015 g/cm, and its tension is 600 N, what is the wavelength (in cm) of the first harmonic?
a. 600 b. 400 c. 800 d. 1 000 e. 200
Applications to Astronomy: The earth's orbit has a mean radius of 1.5 × 108 km. Over a six-month period, the apparent position of a particular star varies by 0.00014° due to parallax. How many light-years is this star from Earth? (1 ly = 9.46 × 1015 m)
A. 0.13 ly B. 1.3 ly C. 13 ly D. 130 ly
The ________ hypothesis was considered plausible in the 1800s, but is it no longer taken seriously
Fill in the blank(s) with correct word
A 63. kg astronaut walks upon the surface of the planet Krypton which has 100. times the mass of the Earth and 100. times the diameter of the Earth. What does she weigh on Krypton?
What will be an ideal response?