What instrument use lenses or mirrors to collect and focus light from distant objects?

How much money do geologist make?

A small box is held in place against a rough vertical wall by someone pushing on it with a force directed upward at 27 ∘ above the horizontal. The coefficients of static and kinetic friction between the box and wall are 0.40 and 0.30, respectively.

It is the thermal energy transferred from a hot object to a cold object.

when an object is moving there is always a force pulling it in the direction of its motion? true or false? explain

A current of4 ampere flows in a wire of resistivity 60 ohm calculate power dissipated in the wire

How much more ground motion is produced by an earthquake of magnitude 7.0 than by an earthquake of magnitude 4.0?

What evidence is there of life in a mini habitat?

A hole is drilled to the center of the earth and a ball is dropped into it. When the ball is at the earth's center, compared with their respective values at the earth's surface,

What is the development of static?

Methane gas absorbs red light, and methane clouds reflect blue light, giving Uranus and Neptune their distinctive blue colors. Why do Uranus and Neptune have methane clouds, but Jupiter and Saturn do not