Where on the H-R diagram are the majority of stars that dominate the night sky?

What will be an ideal response?


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Physics & Space Science

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A skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 12° with the horizontal. The rope moves parallel to the slope with a constant speed of 1.0 m/s. The force of the rope does 900 J of work on the skier as the skier moves a distance of 8.0 m up the incline.

(a) If the rope moved with a constant speed of 2.0 m/s, how much work would the force of the rope do on the skier as the skier moved a distance of 8.0 m up the incline? At what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 1.0 m/s and (c) 2.0 m/s?

Physics & Space Science

When a warm air mass advances over a cold

surface region, it is referred to as a) a stationary front. b) an anticyclone. c) a cold front occlusion. d) simply a warm front.

Physics & Space Science

You push a heavy crate down a ramp at a constant velocity. Only four forces act on the crate. Which force does the greatest magnitude of work on the crate?

(a) The force of friction. (b) The force of gravity. (c) The normal force. (d) The force of you pushing. (e) The net force.

Physics & Space Science

A pair of helium nuclei fused together produces

A) helium isotope. B) lithium. C) beryllium. D) carbon. E) iron.

Physics & Space Science