What is the value of n in the Balmer series for which the wavelength is 410.2 nm?
A) 4
B) 5
C) 6
D) 7
E) 9
C
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In an attempt to avoid “the bends” which occurs if a diver rises too quickly after having been at great depth in the ocean for a long period of time, a diver should come to the surface relatively slowly. What would the rate of change (in Pa/s) of the water pressure be on a diver in the ocean as he rose at 15 m/min? The density of seawater is 1017 
A. 15 kPa/s B. 2.5 kPa/s C. 250 Pa/s D. 150 kPa/s
A teacher sends her students on a treasure hunt. She gives the following instructions: 1. Walk 300 m north 2. Walk 400 m northwest 3. Walk 700 m east-southeast and the treasure is buried there
As all the other students walk off following the instructions, Jane physics student quickly adds the displacements and walks in a straight line to find the treasure. How far and in what direction does Jane need to walk? A) 187 m in a direction 67.3° north of east B) 481 m in a direction 40.9° north of east C) 399 m in a direction 52.5° north of east D) 284 m in a direction 28.2° west of north E) The treasure position cannot be reached in one straight walk.
In the formula v2 = vo2 + 2 a x, what does x represent?
What will be an ideal response?
Two tiny beads are 25 cm apart with no other charges or fields present. Bead A carries 10 µC of charge and bead B carries 1 µC. Which one of the following statements is true about the magnitudes of the electric forces exerted on these beads?
A) The force exerted on A is 10 times the force exerted on B. B) The force exerted on B is 10 times the force exerted on A. C) The force exerted on A is exactly equal to the force exerted on B. D) The force exerted on A is 100 times the force exerted on B. E) The force exerted on B is 100 times the force exerted on A.