Need answer asap when starting a car some energy is used to increase the fuel’s temperature during ignition. this energy causing combustion is 1). absorbed energy 2). chemical energy 3). activation energy 4). latent energy in order for a combustion reaction to occur, like the burning of fossil fuels, what element is required? 1). sulfur 2). hydrogen 3). oxygen 4). helium which of the following is a chemical reaction? 1). crushing pepper 2). rotting vegetables 3). chopping vegetables 4). dew formation if a synthesis (also called combination) reaction is the formation of 1 product, what is the opposite reaction type? 1). combustion 2). replacement 3). neutralization 4). decomposition

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.