A light ray in air strikes a glass surface with an angle of incidence of 
The angle of refraction in the glass is 
What is the speed of light in the glass?
A. 
B. 
C. 
D. 
E. 
D.
Physics & Space Science
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In the equation PV = NkT, the k is known as
A) Avogadro's number. B) Boltzmann's constant. C) Planck's constant. D) the spring (compressibility) constant. E) compressibility.
Physics & Space Science
A car starts from rest and reaches 20 m/s in 5 seconds. The average acceleration of the car is
A. 1.0 m/s2. B. zero m/s2. C. 4.0 m/s2. D. 10.0 m/s2. E. 2.0 m/s2.
Physics & Space Science
A fire engine approaches a wall at 5 m/s while the siren emits a tone of 500 Hz frequency. At the time, the speed of sound in air is 340 m/s. How many beats per second do the people on the fire engine hear?
a. 0 b. 15 c. 29 d. 63 e. 250
Physics & Space Science
What is the difference between a roche moutonnee and a drumlin?
What will be an ideal response?
Physics & Space Science