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<span>If both surfaces are convex the lens is thicker at its center than its edges. A lens with one surface convex and one concave is called meniscus. Some lenses change the direction of the rays enough to cause the rays in a bundle to emerge convergent, that is, converging toward a common point. Whatever the mix of surfaces, if the lens is thicker at its center than its edges it is called a converging lens (having positive focal length). If it is thinner at its center than its edges it is called diverging (having negative focal length).</span>
The third bulb may take extra current from the 12V battery. and extra power
Answer: sum of forces is zero
Explanation: acording to the newton first law you can say that the sum of the forces acting over the object is zero no matter the direction of movement
good luck
mario
For the purpose of the problem we can consider only the motion on the x-axis (horizontal direction).
We have two forces:the horizontal component of the force F of 3320 N acting forward, and the backward force of 550 N.
The horizontal component of the forward force is
So, the net force is
in the forward direction.
The car has a 12 mile head start, going 80 mph, so his distance is:dcar=80∗t+12
The is going at 108 mph, so his distance is:dcop=108t
Setting them equal to each other we get:80t+12=108t⇒12=28t⇒t=1228=37
So 3/7 of an hour.about 25.7 mins.