Why is the sun the brightest star in the sky even though it is an average star

To run the physics cart, the fan speed of the cart is manipulated. this is the (blank) variable. the cart accelerates due to the speed of the fan. acceleration is therefore the (blank) variable. a “constant” is a parameter that stays the same regardless of the variables. one parameter of the cart that is held constant is the (blank) .

What is the earliest point in the universe that we can observe? why can’t we see back further than this?

Energy flows from the producer level to the level. is called