Guess i'll make you ! hurry!

the summer is caused by

a) direct sunlight striking earth

b) indirect sunlight striking earth

c) earth's closeness to the sun

d) earth's far distance from the sun

According to newtons universal law of gravitation, which would change the parh of the ball so it traces out widest curved path possible?

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)

The speed of light can be used to measure the