It is said that ten feet of ancient plant debris was needed in order to make one foot of coal. This is true because fossil fuels were formed from plants and animals that lived 300 million years ago in primordial swamps and oceans. <span>Eventually, many of the seas receded and left dry land with fossil fuels like the one you are talking about, coal</span>
Answer: False, not all matter we encounter in everyday life exists in one of the three physical forms.
The answer is Anxiety. Hope this helps.
Answer:
The tangential speed of the ball is 11.213 m/s
Explanation:
The radius is equal:
(ball rotates in a circle)
If the system is in equilibrium, the tension is:
Replacing:
Replacing:
Answer:
OK draw a diagram - you have the force from (b) acting sown the slope and a component of the weight. Use F=ma to get the deceleration and then use SUVAT. Post your working if this doesn't work.
friction = 900N
braking = 3100N
total = 4000N
w= mxg = 1000*9.81= 9810N
total = 9810 + 4000 = 13810N
force/mass = 13810/1000 = 13.81ms^-2
then using v^2 = u^2 + 2as, i get s as 14 but it is incorrect
Explanation:
