Question

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	8.91 pts.98% 2% try penalty Hints: 0,0	Try 1 - your answer of 1613 Hz is not correct. WARNING: 4 SF given, 5 SF expected. # tries: 1
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	8.91 pts.98% 2% try penalty Hints: 0,0	Try 1 - your answer of 1120 Hz is not correct. WARNING: 3 SF given, 5 SF expected. # tries: 1
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	# tries: 0

just need E-h. 1613 and 1120 are incorrect for e and f

Answer 1