Dimensional analysis can tell you whether an equation is physically correct
Indicate whether the statement is true or false
FALSE
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A galactic bar forms from a gravitational disturbance and is a temporary feature of galaxies.
Answer the following statement true (T) or false (F)
A Carnot engine operating between a reservoir of liquid mercury at its melting point (233 K) and a colder reservoir extracts of heat from the mercury and does of work during each cycle. What is the temperature of the colder reservoir?
A) 47 K B) 186 K C) 163 K D) 207 K
Once an object strikes Earth's surface, it is called a "meteor"
a. True b. False Indicate whether the statement is true or false
A stationary 1.67-kg object is struck by a stick. The object experiences a horizontal force given by F = at - bt2, where t is the time in milliseconds from the instant the stick first contacts the object
If a = 1500 N/(ms) and b = 20 N/(ms)2, what is the speed of the object just after it comes away from the stick at t = 2.74 ms? A) 3.3 m/s B) 22 m/s C) 3.7 m/s D) 25 m/s