Which reaction fuels the burning of the sun

What is the range of atomic numbers of elements that don't exist naturally on earth?

Oil is poured into the open side of an open-tube manometer containing mercury. What is the density of the oil if a column of mercury 5.50 cm high supports a column of oil 85.0 cm high? (The density of mercury is 13,600 kg/m³)

A 650 kg car accelerates at 4.0 m/s2 south. what is the net force acting on it?

Describe which renewable resors are used primarly to produce electricty

A ball is thrown horizontally at a speed of 24 meters per second from the top of a cliff. if the ball hits the ground 4.0 seconds later, approximately how high is the cliff?

A 50.6 g ball of copper has a net charge of 1.6 µc. what fraction of the copper's electrons have been removed? (each copper atom has 29 protons, and copper has an atomic mass of 63.5.

Which is a tool used by scientists to determine the composition of objects? a hologram a spectrometer a wave front a prism

If the Sun were scaled down to the size of a grapefruit, about how far would you have to walk from our classroom to reach Alpha Centauri, the closest star?

What happens to the density of the mass decreases but the volume remains the same?

An interstate highway loop meets the primary route at both ends. the first digit of its route number is always