Answer:
A) a wolf
Explanation:
an organism is an individual: a wolf
a group: a heard of sheep
a measurement of a compound: a drop of water
an organ: a heart
Answer:
so to find the acceleration we divide the change in velocity by the time taken for it so intial velocity was 3m/s and final velocity is 10m/s. we substract 3 from 10 to get the change in velocity ie 10m/s -3m/s = 7m/s. now decide this by the time taken for it that is 4 sec as given. acceleration is 7/4 = 1.75m/s^2
Answer:
Explanation:
Given that
Train 1 (observer):
Speed = 109 km/h
Train 2 (source):
Speed = 99 km/h
Train 2 emitting frequency = 500 Hz
We know that observer and source are moving toward each other, then frequency heard by observer can be given as follows
Where C is the velocity of sound (C=1225 Km/h)
Now by putting the values
C. 9.19x10^3
P=mxg/a
1.2x10^3 x 9.8/1.28 ~9.19x10^3