The principle of conservation of energy states that energy can neither be created nor destroyed, but can be changed from one form to another. The law of inertia on the other hand states that a body remains at a state of rest or motion on a straight line unless compelled by an external force. So i think that the answer is B, which is FALSE because the question is more related to the law of inertia(Newtons first law) than to the law of conservation of energy. Hope i helped.
Answer:D.
Real, inverted, smaller than the object, and closer to the mirror than the object
Explanation: Real images will be inverted. As it is beyond the centre of curvature it is also beyond 2F which means that the image is inside the centre of curvature ( between F and 2F from the mirror ) As the image is closer to the mirror than the object it must be diminished in size
Answer:
speed does water emerge from the hole v= 2.8 m/sec
Explanation:
the depth of the rectangular trough h = 0.40 m full of water
Also, given One end of the trough has a small drain plug right at the bottom edge.
we have to find the speed does water emerge from the hole.
This can be done using law of conservation of energy
the potential energy of water will be converted into kinetic energy as
⇒
h= depth, g= acceleration due to gravity and v= velocity of water from the hole
plugging the values
v= 2.8 m/sec
Forces are needed to lift, turn, move, open, close, push, pull, and so on. When you throw a ball, you are using force to make the ball move through the air. More than one force can act on an object at the same time.
