A Young's double slit has a slit separation of 1.65 × 10^?5 m on which a monochromatic light beam is directed. The resultant bright fringes on a screen 1.10 m from the double slit are separated by 2.25 × 10^?2 m. What is the wavelength of this beam? (1 nm = 10?9 m)
a. 6.90 nm
b. 205 nm
c. 337 nm
d. 338 nm
e. 408 nm
c
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A ball is thrown horizontally from the top of a building 0.10 km high. The ball strikes the ground at a point 65 m horizontally away from and below the point of release. What is the speed of the ball just before it strikes the ground?
A. 43 m/s B. 47 m/s C. 39 m/s D. 36 m/s E. 14 m/s
When a charged capacitor is connected to an inductor, the value of the charge on the capacitor oscillates and so does the current in the circuit
What changes in the current would take place if the same capacitor, with the same initial charge, is connected to a inductor with a larger inductance? A) Both the period of oscillation of the current and its maximum value would increase. B) The period of oscillation of the current would stay the same but its maximum value would increase. C) The period of oscillation of the current would decrease but its maximum value would remain the same. D) The period of oscillation of the current would increase but its maximum value would remain the same. E) Both the period of oscillation of the current and its maximum value would decrease.
A race car travels 40 m/s around a banked (45° with the horizontal) circular (radius = 0.20 km) track. What is the magnitude of the resultant force on the 80-kg driver of this car?
a. 0.68 kN b. 0.64 kN c. 0.72 kN d. 0.76 kN e. 0.52 kN
Atoms are mostly empty space
a. True b. False Indicate whether the statement is true or false