What is meant by compressibility?
What will be an ideal response?
Compressibility is the volume change of a substance due to pressure changes or
temperature changes of the substance. The compressibility is often measured
and recorded as a fractional change of volume as compared to the substance’s
initial volume. Typically, fluids and gases increase their volume with increasing
temperature or decreasing pressure.
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A charged particle of mass
kg enters a region of magnetic field at a speed of 
at an angle of 37 degrees relative to the magnetic field direction. If the magnetic field strength is 1.2 T what will be the radius of the helical path it takes?
A. Insufficient information given. B. 15 cm C. 8.9 cm. D. 11 cm
Once the website is published, the testing also is complete.
Answer the following statement true (T) or false (F)
You are on the surface of an object, and you have a fairly clear view out into space. Unfortunately, you are also very squashed. The light you observe from distant objects is slightly blueshifted
The surface of the object is composed primarily of carbon and oxygen, and the distance to the horizon seems about the same as that on Earth. By observing the sky for a few weeks, you realize that there are several planets orbiting your object. Where are you? A) You are on the surface of a neutron star. B) You are on the surface of the Earth. C) You are on the surface of a planet that is somewhat more massive than the Earth. D) You are on the surface of a white dwarf. E) You are "on" an accretion disk around a black hole.
For sound, a Doppler shift to a higher frequency indicates that the source of the sound is moving