Answer:
There is no kinetic energy.
Explanation:
Since K=1/2mv^2 where m=2122kg and v=0, clearly the car has no kinetic energy as multiplying by 0 results in 0. If the car were moving, there would be kinetic energy.
Answer:
none it's Hydroelectric energy
<h2>
Hello there! :)</h2>
It's a pleasure to be helping you today with your<u> physics question!</u>
Answer:
Explanation:
We want to find the initial speed of the ball.
To do this, we have to apply the formula for the time of flight of a projectile:
where θ = angle of flight
g = acceleration due to gravity
v0 = initial speed
Therefore, substituting the given values into the formula, we have that:
⇒ 2 ×
×0.8910= 9.8 × 4.2
⇒
That is the initial speed of the ball.
<em />
<em>I hope this helps you!</em>
<em>Good Luck with your Assignment!</em>
D:
X: positive
Y: positive
Explanation:
To answer correctly the question, we need to remind the difference between the electric field produced by a positive charge and by a negative charge:
- For a positive charge, the direction of the field lines is away from the charge (because they represent the direction in which a positive test charge would move, if placed in this field)
- For a negative charge, the direction of the field lines is toward the charge (because the positive test charge would move toward the negative charge, if placed in this field)
In the figure, we see that both charges have electric field lines that go away from the charges: therefore, according to the previous statements, they both have to be positive charges.
