Which of the following is false? question a., light energy from the sun warms the surface of the earth’s continents and the ocean. choice b., approximately 50% of the sun’s light energy does not reach the surface of the earth. choice c., the earth radiates heat energy back to the atmosphere. choice d., much of the heat that is lost from the earth’s surfaces is re-radiated back into the atmosphere by greenhouse gases. choice e., the greenhouse gases in the atmosphere have all come from human activity

It's have to be 12 or idk

The genes are more on the side of.. b nature

The figure is missing but we can answer anyway.the correct answer is "releasing the string". in fact, when the person is holding the bow and the arrow, the kinetic energy of the arrow is still zero (because the arrow is not moving). the moment the arrow is released, it acquires a velocity v, so its kinetic energy will become different from zero: where m is the mass of the arrow and v its velocity.  all the other options, instead, do not increase the kinetic energy of the system: -  pulling farther back on the string : this will just increase the elastic potential energy of the system-  holding the arrow higher: this will increase the gravitational potential energy of the system (which is given by u=mgh, where h is the height above the ground)-  decreasing the mass of the arrow: this will decrease the gravitational potential energy of the system (which is given by u=mgh, where m is the mass)