Where and how do deltas form?
What will be an ideal response?
Answer: A delta forms where a stream enters a body of standing water and loses its ability to transport sediment. Large, coarse-grained sediments are the first to settle. Small, fine-grained sediments (able to be carried out to the farther reaches of the delta) are the last to settle. Thus sediment is deposited in order of decreasing weight, with heavy, coarse particles settling at and near the shoreline and light, fine particles settling farther offshore.
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Two uniform rods, each of length 2.0 m, are bent to form semicircles. One rod has a charger per unit lent of 1.5 nC/m, and the other has a charge per unit length of –1.5 nC/m. The semicircles are joined to make a circle. What is the magnitude of the electric field at the center of the circle?
a. 42 N/C b. 84 N/C c. 34 N/C d. 68 N/C e. 0
You have 1 kg of liquid water and 1 kg of steam. If you add 100 J of energy to each, which would experience the greatest increase in temperature?
1.the water 2.the steam 3.They will both experience the same increase in temperature. 4.It cannot be determined because it depends on the actual temperature of the water and steam as well as the pressure.
As a rotating gas cloud contracts, it spins:
A) faster due to an increase in angular momentum. B) slower due to a decrease in angular momentum. C) at a constant rate. D) faster due to conservation of angular momentum. E) slower due to conservation of angular momentum.
A body at the end of a spring oscillates up and down ten times in five seconds. The period of oscillation is
a. 0.5 s. b. 2 s. c. 5 s. d. 10 s. e. not determinable.