In a closed universe, the angles of a triangle add up to
A) less than 180 degrees. B) 180 degrees. C) more than 180 degrees.
C
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A piece of aluminum has density 2.70 g/cm3 and mass 834 g. The aluminum is submerged in a container of oil (oil's density = 0.650 g/cm3). How much oil does the metal displace?
a. 287 cm3 c. 232 cm3 b. 309 cm3 d. 1125 cm3
A plane is headed eastward at a speed of 156 m/s. A 20.0 m/s wind is blowing southward at the same time as the plane is flying. The velocity of the plane relative to the ground is
A) 157 m/s at an angle 7.31° south of east. B) 157 m/s at an angle 7.31° east of south. C) 155 m/s at an angle 7.36° south of east. D) 155 m/s at an angle 7.36° east of south. E) 157 m/s at an angle 7.36° south of east.
A bulldozer drags a log weighing 500. N along a rough surface. The cable attached to the log makes an angle of 30.° with the ground. The coefficient of static friction between the log and the ground is 0.50
What minimum tension is required in the cable in order for the log to begin to move?
In age, the surface of Venus is much ________ than even the lunar mare
Fill in the blank(s) with correct word