The specific heat capacity of water is about twice the specific heat capacity of ice. The amount of heat required to raise the temperature of 1 kg of water 10°C is __________ times the amount of heat required to raise the temperature of 1 kg of ice 10°C
Fill in the blank(s) with correct word
two
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When strong solar wind storms are diverted poleward by our magnetic fields, we often observe ________ in the ionosphere
Fill in the blank(s) with correct word
Suppose you are using the Doppler method to look for planets around another star. What must you do?
A) Compare many spectra of the star taken over a period of many months or years. B) Compare many spectra of an orbiting planet taken over a period of many months or years. C) Compare the brightness of the star over a period of many months or years. D) Carefully examine a single spectrum of an orbiting planet. E) Carefully examine a single spectrum of the star.
An isotope of fluorine has 9 protons and 10 neutrons. What are the atomic number and atomic weight of this fluorine? If we added a proton to this fluorine nucleus, would the result still be fluorine? What if we added a neutron instead? Explain
What will be an ideal response?
An earthquake emits both P waves and S waves that travel at different speeds through the Earth. Suppose a P wave travels at 8000 m/s and an S wave at 4000 m/s. If P waves are received at a seismic station 20.0 s before an S wave arrives, how far is the station from the earthquake center?
a. 80 km c. 240 km b. 160 km d. 320 km