Identify the statement that is true about the Big Bang. a. It is the explanation for how our Solar System developed. b. It began with all matter and energy concentrated in an infinitesimally small point. c. It occurred less than 13 million years ago. d. The Big Bang theory states that at the instant of explosion, atoms of all major elements came into existence.

When measuring volume, why is it important to use the correct tools and units to attain the greatest accuracy? use specific examples from the lab to support your answer. (5 points)

Aparticle moves in a circle 1.50 m in radius . through what angle in radians does it rotate if it moves through an arc length of 2.50m? what is the angle in degrees?

Currents in dc transmission lines can be 100 a or higher. some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. for a line that has current 150 a and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? express your answer in teslas and as a percentage of the earth’s magnetic field, which is 0.50 g. is this value cause for worry?