What is the acceleration of an object in free fall at Earth's surface?
Answer: 10 m/s2
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The south celestial pole appears on your meridian at an altitude of 30° in the south. Where are you?
A) latitude = 30°S B) latitude = 60°S C) latitude = 30°N D) latitude = 60°N E) the South Pole
A student pulls a box of books on a smooth horizontal floor with a force of 100 N in a direction of 37.0° above the horizontal. The mass of the box and the books is 40.0 kg
(a) Draw the free-body diagram for the box. (b) Calculate the acceleration of the box. (c) Calculate the normal force acting on the box.
The NASA Curiosity rover exploring Mars carries a number of scientific instruments, including a spectrograph (a device for recording a spectrum), and a high intensity laser. On several occasions, Curiosity has fired its laser at the surface of a rock sample, while observing the process with a spectroscope. The laser is intense enough to vaporize the atoms on the surface of the sample into a hot,
excited gas. Why is this a useful technique for the rover to employ? What will be an ideal response?
The maximum distance that the particles of a wave's medium vibrate from their rest position:
a) Frequency b) Wavelength c) Wave Speed d) Amplitude