DO COURSES
GROUPS
RESOURCES
GRADES
rict
ysics 1B: Period 6 Week 4: Acoustic pollution Solutions
ear Loss Quiz
Question 1 of 1 Page 1 of 1
Question 112 points)
Based on the reading which of the following sounds would NOT have an impact on the Beluga whales hearing. The Beluga whale has a range
from about 500Hz to 30,000Hz
Оа
Ob
Selsmic Airguns (100-250Hz)
Drilling Vessel (10-4,000Hz)
Support Ship (20-1,000Hz)
Marine Mammal Monitoring Sonar (-3,000Hz)
d
Submit

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".