Phil paddles his canoe at 8 m/s in still water. Keeping this speed he then paddles upstream in a river that flows downstream at 6 m/s. To his friend sitting on shore, Phil's speed is
A. 10 m/s.
B. 8 m/s.
C. 2 m/s.
D. 6 m/s.
Answer: C
You might also like to view...
Cyanide is used to leach gold from the ore. Which of these potential scenarios associated with cyanide leach ponds would cause the greatest immediate impact to far reaching areas?
A. spill directly into a stream B. air emissions C. leaking into the groundwater D. small amount spilled on the ground
When we say a circuit is DC, we mean that current in the circuit
A. is directly present. B. has a single direction. C. is parallel to the connecting wires. D. alternates only slowly.
What was apartheid?
A) the dialect of Dutch which is spoken in South Africa B) South Africa's governmental system C) the existence of landlocked states in southern Africa D) the geographic separation of races in South Africa E) the kinship system of Sub-Saharan Africa
What does the figure illustrate?
A) Humans have an increased mortality rate at a young age. B) Fish have a steady rate of mortality change. C) Birds have a constant mortality rate. D) Birds have an ever decreasing mortality rate. E) Fish have a decreased mortality rate at young age.