Which of the following statements about x-rays and radio waves is not true?
A) X-rays travel through space faster than radio waves.
B) X-rays have shorter wavelengths than radio waves.
C) X-rays and radio waves are both forms of light, or electromagnetic radiation.
D) X-rays have higher frequency than radio waves.
A) X-rays travel through space faster than radio waves.
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The quantity which does not change in magnitude from that observed in system S when observed in system S' moving away from system S at speed v is
A.
.B.
.C.
D.
E.
A 500?g block traveling at 60 cm/s slides onto a 1?kg cart as shown. The block stops sliding before reaching the end of the cart
As the block is sliding on the cart,
which object has the larger acceleration?
For chlorine gas, the van der Waals constants are: a = 0.658 J?m3/mol2, and b = 5.62 × 10-5 m3/mol. A 3.0-L tank contains 10.0 moles of chlorine gas at a temperature of 625 K. What is the pressure in the container?
A) 14.0 MPa B) 13.5 MPa C) 17.3 MPa D) 11.0 MPa E) 18.2 MPa
If star A is closer to us than star B, then Star A's parallax angle is
A) larger than that of Star B. B) smaller than that of Star B. C) hotter than that of Star B. D) fewer parsecs than that of Star B.