The break-up of Pangaea began in the Mesozoic era
A) with the rifting apart of North America and Africa.
B) with the collision of North America with Africa.
C) with the formation of the Himalayan Mountains.
D) at the end of the Ordovician.
Answer: A
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Glycerin, with a viscosity of 1.50 N • s/m2, is flowing with an average speed of 1.20 m/s through a tube that has a radius of 5.00 mm and is 25.0 cm long. What is the drop in pressure between the ends of the tube?
A) 144 kPa B) 45.8 kPa C) 72.0 kPa D) 76.3 kPa E) 129 kPa
A 1-kg ball is released from a height of 6 m, and a 2-kg ball is released from a height of 3 m. Air resistance is negligible as they fall. Which of the following statements about these balls are correct? (There could be more than one correct choice
) A) As they reach the ground, the 1-kg ball will have more kinetic energy than the 2-kg ball because it was dropped from a greater height. B) As they reach the ground, the 1-kg ball will be moving faster than the 2-kg ball. C) Both balls will reach the ground with the same speed. D) Both balls will reach the ground with the same kinetic energy. E) Both balls will take the same time to reach the ground.
In general, the surfaces of the planets will be ________ than the age of the solar system
Fill in the blank(s) with correct word
A long nonconducting cylinder (radius = 12 cm) has a charge of uniform density (5.0 nC/m3) distributed throughout its volume. Determine the magnitude of the electric field 15 cm from the axis of the cylinder
a. 20 N/C b. 27 N/C c. 16 N/C d. 12 N/C e. 54 N/C