Question

2. 1189 A police car is sounding a siren with 1340 Hz on a 20°C day....

2.
1189

A police car is sounding a siren with 1340 Hz on a 20°C day.
Answers must be within 2 Hz of correct answer.

      
Part Description Answer Save Status
A. You are standing beside the road. What frequency do you hear as the police car approaches you at 128 km/hr?
(include units with answer)

A: 1495 Hz
C: 1494.97 Hz


Hints: 0,0
# tries: 1
B. You are standing beside the road. What frequency do you hear after the police car passes you at 128 km/hr?
(include units with answer)

A: 1214 Hz
C: 1214.14 Hz


Hints: 0,0
# tries: 1
C. You are driving down the road at 128 km/hr and the police car is sitting still. What frequency do you hear as you approach the siren?
(include units with answer)

A: 1479 Hz
C: 1478.91 Hz


Hints: 0,0
# tries: 1
D. You are driving down the road at 128 km/hr and the police car is sitting still. What frequency do you hear after you pass the siren?
(include units with answer)

A: 1201 Hz
C: 1201.09 Hz


Hints: 0,0
# tries: 1
E. The police car is traveling at 128 km/hr. You are traveling at 88 km/hr in the opposite direction. What frequency do you hear as you approach the police car?
(include units with answer)


Format Check


9.09 pts.100%


2% try penalty
Hints: 0,0
# tries: 0
F. The police car is traveling at 128 km/hr. You are traveling at 88 km/hr in the opposite direction. What frequency do you hear after you pass the police car?
(include units with answer)


Format Check


9.09 pts.100%


2% try penalty
Hints: 0,0
# tries: 0
G. The police car is traveling at 128 km/hr. You are traveling at 88 km/hr in the same direction. What frequency do you hear as the police car approaches you from behind?
(include units with answer)


Format Check


9.09 pts.100%


2% try penalty
Hints: 0,0
# tries: 0
H. The police car is traveling at 128 km/hr. You are traveling at 88 km/hr in the same direction. What frequency do you hear after the police car passes you?
(include units with answer)


Format Check


9.09 pts.100%


2% try penalty
Hints: 0,0
#

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