How do stars radius compare with their mass

What energy change would accompany the loss of 0.1 mg in mass? Express the energy change in kilojoules to one significant digit.

The position of a 2.2 kg mass is given by x = (2t3â5t2) m, where t is in seconds.

Which of the following is not true? A) Absolute zero on the Kelvin scale is - 273°C. B) Liquefaction of the gas occurs at approximately - 155°C. C) The gas pressure increases as the temperature decreases.

Which statement best describes a realationship amongst hypotheses, theories, and laws?

What is the recommended daily dosage of flouride for a child over three years of age living in an area where drinking water is free fluoride

What is the purpose of a valve?

A particle travels 15 times around a 10-cm radius circle in 42 seconds. what is the average speed (in m/s) of the particle?

Where are the magnetic fields stronger near a bar magnet? A) Top B) Center C) Ends D) Bottom

You pull a simple pendulum of length 0.225m to the side through an angle of 3.50∘ and release it. Part A How much time does it take the pendulum bob to reach its highest speed? Take free fall acceleration to be 9.80 m/s^2.

What is the velocity of a wave having a frequency of 25 Hz and a wavelength of 10m