Answer:
Since both start with the same vertical velocity from the same position with the same acceleration they will reach the lake at the same time.
Well, my German isn't as sharp as it used to be, but it looks like you're supposed to use the symbols at the top and draw two circuits ... one where the switch is closed and the light is shining, the other where the switch is open and the light is out.
That should be pretty easy for you. Just hook up one battery, one switch, and one light, all in series. Then opening and closing the switch makes the light go on and off.
Answer:
Explanation:
Using the conservation of the linear momentum P:
so:
where 
is the mass of kevin, 
is the velocity of kevin before he grabs her brother, 
is the velocity of her brother and him after grabs her brother and 
is the velocity of both after the collition.
So, replacing the values and solving for Vk, we get:
Answer:
12.56 A.
Explanation:
The magnetic field of a conductor carrying current is give as
H = I/2πr ............................... Equation 1
Where H = Magnetic Field, I = current, r = distance, and π = pie
Making I the subject of the equation,
I = 2πrH............... Equation 2
Given: H = 1 T, r = 2 m.
Constant: π = 3.14
Substitute into equation 2
I = 2×3.14×2×1
I = 12.56 A.
Hence, the magnetic field = 12.56 A.
