Use the H-R diagram to answer the following questions.

What is the approximate temperature of the supergiant Betelgeuse?

Which star on this diagram is the most similar to the Sun in luminosity and temperature?

A wheel starts from rest and rotates with constant angular acceleration and reaches an anaular speed of 12 rad/s in 3 s.

What is the kinetic energy of a 10-kg bicycle moving at 10 m/s?

Why mass does not affect period of the pendulum?

Many plants will grow from cuttings. The cutting develops a new root system and becomes a clone of the parent plant, but an independent new plant. This type of reproduction is called

A tennis player hits a 58.0 {/rm g} tennis ball so that it goes straight up and reaches a maximum height of 7.35 {/rm m}. How much work does gravity do on the ball on the way up?

Internal forces do not affect the conservation of momentum because (a) they cancel each other, (b) their effects are canceled by external forces, (c) they can never produce a change in velocity, (d) newton's second law is not applicable to them.

How are intensity sound and energy related

Drag each label to the correct location. Sort the sentences based on whether energy is stored or not stored in the situation described.

The rock starts as a solid and then ...

Think about it: suppose a meteorite collided head-on with mars and becomes buried under mars's surface. what would be the elasticity of this collision? explain your answer.