Answer:
Explanation:
initial velocity, u = 0 m/s
final velocity, v = 30 m/s
Let the mass is m .
Initial kinetic energy, Ki = 1/2 mu² = 0
Final kinetic energy, Kf = 1/2 mv² = 0.5 m x 30 x 30 = 450 m
Specific energy change = change in kinetic energy per unit mass
= 450 m / m = 450 J/kg = 0.45 kJ/kg
If it soaks into the earths surface it becomes ground water
Answer:
34.70 N
Explanation:
Given :
F~ 1 = 43 N in direction 38◦
F~ 2 = 26 N in direction −140◦
F~ 3 = 27 N in direction 110◦
Therefore,
F~x = 43 cos (38) + 26 cos (-140) + 27 cos (110)
= 43 (0.7) + 26 (-0.7) + 27 (-0.3)
= 3.8
F~y = 43 sin (38) + 26 sin (-140) + 27 sin (110)
= 43 (0.6) + 26 (-0.6) + 27 (0.9)
= 34.5
so, F~ = 
= 34.70 N
Physical science is defined as the study of observable phenomena in the universe.<span>The main idea of physical science is known as the "scientific method". </span>
<span>This method states: </span>
<span>1. observe a "real" ( not imaginary ) phenomena. </span>
<span>2. make a hypothesis ( or theory / idea ) that EXPLAINS this phenomena. </span>
<span>3. conduct a real experiment to test this hypothesis. </span>
<span>4. confirm that the experiment validates the original hypothesis and if necessary amend the theory. </span>
<span>This method is responsible for virtually every scientific explanation of every kind. </span><span>It has worked so well that the very communication you are having with me is a result of the wonders of physical science. </span>
<span>Hope your question was answered :)</span>
Answer:
the price per gallon of gas leah paid is 8.58
Explanation:
42.90/5=8.58
