To determine the height of a bridge above the water, a person drops a stone and measures the time it takes for it to hit the water. If the time is 2.3 s, what is the height of the bridge?
A) 10 m
B) 14 m
C) 26 m
D) 32 m
E) 52 m
C
You might also like to view...
The radiation emitted from a small hole in a furnace is
a. ultraviolet b. infrared c. x ray d. microwave e. blackbody
Magnetism had been a known phenomenon for some time before its relation to electric currents was found. That a current in a wire produces a magnetic field was discovered by:
a. Maxwell. b. Ampere. c. Oersted. d. Tesla.
Which of the following types of data provide evidence that helps us understand the life tracks of low-mass stars?
A) H-R diagrams of globular clusters B) H-R diagrams of open clusters C) spacecraft observations of the Sun D) observing a low-mass star over many years
An object is being acted upon by three forces and moves with a constant velocity. One force is 60.0 N along the x-axis, the second is 75.0 N along the y-axis. What is the magnitude of the third force?
A) 135 N B) 15.0 N C) 48.0 N D) 67.5 N E) 96.0 N