Answer:
a) 433.96 miles/hr
193.98 m/s
b) 3899.3 Hz
c) 2.56 x 10^-4
0.015
Explanation:
wavelength of the tsunami = 470 miles
Distance traveled = 2300 miles
time taken to travel this distance = 5.3 h
a) wave's speed = distance/time
==> 2300/5.3 = 433.96 miles/hr
1 miles/hr = 0.447 m/s
433.96 miles/hr = 433.96 x 0.447 = 193.98 m/s
b) frequency of a wave f = speed/wavelength
for wavelength, 470 miles = 470 x 1609.34 = 756389.8 m
frequency = 756389.8/193.98 = 3899.3 Hz
c) Period T = 1/frequency
T = 1/3899.3 = 2.56 x 10^-4
60 sec = 1 min
Period T in sec = 2.56 x 10^-4 x 60 = 0.015
Answer:
Add
Explanation:
When two forces are acting in the same direction then there magnitude are added to each other
Let the first force is and second force is and when they act in same direction then their equivalent will be equal to
When they cat in opposite direction then their equivalent will be
Option (d) is correct.
Distance is the total path length covered by the object.
so, for distance, we add all the path lengths
Here the total distance =7+5+2 =14 km
1. What does PE stand for? Physical Education
2. Name one common PE exercise? Your choice A knee push up B piano keys