From what part of the H-R diagram have the giants in a star cluster evolved?

What will be an ideal response?


Masses that were on main sequence between about 0.4 to 4 solar masses.

Physics & Space Science

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Explain the process through which kinetic energy is lost in an inelastic collision

What will be an ideal response?

Physics & Space Science

The power dissipated in an AC series circuit increases as the phase angle approaches what value?

a. zero b. 45° c. 90° d. 180°

Physics & Space Science

A 60.0-kg satellite is in orbit a distance 2000 km above the surface of the earth. The mass of the earth is 5.976 x 1024 kg and the radius of the earth is 6.378 × 106 m

(a) What is the change in the gravitational potential energy if the satellite moves to a circular orbit 5000 km above the surface of the earth? (b) What is the change in kinetic energy if the satellite moves to a circular orbit 5000 km above the surface of the earth? (c) How much work must be done on the satellite to move it to a circular orbit 5000 km above the surface of the earth?

Physics & Space Science

Although Newton's second law, F = ma, is valid for collisions, it is difficult to use it generally in this form for collisions because

A. the acceleration occurs during a time interval too short to measure easily. B. the force F is not constant and the acceleration occurs during a time interval too short to measure easily. C. the acceleration is too small and the force F is not constant. D. the acceleration is too small. E. the force F is not constant.

Physics & Space Science