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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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?
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
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