Answer:
23
21.7391304348 m
Explanation:
L = Initial length = 500 m
= Change in temperature = 40-(-35)
= Coefficient of thermal expansion =
Change in length is given by
The change in length is 0.45 m
The number of joints would be
The number of joints is 23
Each bridge section length would be
The length of each bridge section would be 21.7391304348 m
Answer:
She needs 250 g more of potting soil.
Explanation:
Write 1 kg in grams, so you can compare the quantities in the same units: 1 kg = 1000 g
Then, since she has 750 g, she needs 1000 g - 750 g = 250 g to complete her task.
f' = frequency observed by the police car after sound reflected from the vehicle and comes back to police car = 1250 Hz
f = frequency emitted by the police car = 1200 Hz
V = speed of sound = 340 m/s
v = speed of vehicle = ?
frequency observed by the police car is given as
f' = f (V + v)/(V - v)
inserting the values in the above equation
1250 = 1200 (340 + v)/(340 - v)
v = 6.9 m/s
Answer:
1- Likeness
2- Differences
3- Interdependence
4- Cooperation and conflict
5- Society is a network of social relations
6- Sense of belonging
7- The society is abstract
8- The society is dynamic
9- Integral culture
10- Division of labor
Explanation:
Stay frosty