1 is standing wave
2 is Constructive Interference
<span>3 is longitudinal
4 is first choice
5 is first choice</span>
<span>Just add the two kinetic energies;
E = (1/2)mv^2 + (1/2)mv^2</span>
Answer:
The electric field points to the left because the force on a negative charge is opposite to the direction of the field.
Explanation:
Normally,in an electric field, the positive charge has tendency to move from higher to lower potential and therefore, experience the electric force in the direction of electric field since electric field lines are directed from high to low potential whike a negative charge has tendency to move from low to high potential and hence experience the electric force in the direction opposite to electric field since electric field lines are directed from high to low potential.
Thus, we can say that; The electric field points to the left because the force on a negative charge is opposite to the direction of the field.
Answer:
The answer is option C.
Wind energy to kinetic energy to electric energy
Hope this helps
Answer
NB:
- speed, U is measure in m/s
- acceleration, a is measured in m/s²
-time t in seconds , s
Therefore conversation must be made
Speed U = 20km/hrs
=20km÷1hr
But 20km= 20×1000=20000m
1hr= 1×60min×60sec=3600s
U=20000÷3600=5.56m/s
a=30km/hrs
=30km÷1hr
But 30km=30×1000=30000
1hr=3600s
a=30000÷3600=8.33m/s²
From the equation of motion
S=Ut + ½ at².
Where s= distance
S = 5.56m/s × 20s + ½(8.33m/s²)(20s)²
S = 1777.3m
