The interference of light is because of its particle nature as suggested by Sir Isaac Newton
Indicate whether the statement is true or false
FALSE
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As you stand by the side of the road, a car approaches you at a constant speed, sounding its horn, and you hear a frequency of 80.0 Hz. After the car goes by, you hear a frequency of 60.0 Hz
What is the speed of the car? The speed of sound in the air is 343 m/s. A) 64.0 m/s B) 49.0 m/s C) 16.0 m/s D) 36.0 m/s E) 25.0 m/s
An atom can be excited into a higher energy state by absorbing a photon
a. True b. False Indicate whether the statement is true or false
A fire hose is turned on the door of a burning building in order to knock the door down. This requires a force of 1000. N
If the hose delivers 40. liters per second, what is the maximum velocity of the stream needed, assuming the water doesn't bounce back? A) 50. m/s B) 25 m/s C) 40. m/s D) 15. m/s E) 30. m/s
Water is flowing through a V-shaped weir, which has a 30° vertex
The flow rate is 7.0 x 104 kg/s and the speed of the flow is 5.0 m/s. What is the distance from the surface of the water to the vertex? A) 3.6 m B) 7.2 m C) 4.8 m D) 9.6 m E) 14.4 m