A white dwarf converts __________________ energy into _________________ energy
a. nuclear, gravitational b. chemical, potential
c. kinetic, potential d. gravitational, thermal
d
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(Choose all that apply.) An observatory in space could in principle detect
A) visible light. B) x-rays. C) infrared light. D) ultraviolet light. E) radio waves. F) gamma rays.
a type of star cluster that contains mostly very old stars is
What will be an ideal response?
An ambulance is generating a siren sound at a frequency of 2,000 Hz. The velocity of sound is 345.0 m/s. The observer and the ambulance are traveling toward each other at a velocity of 24.00 m/s. If the observer is stationary, what is the frequency of the siren perceived by the observer?
A. 2,032 Hz B. 2,150 Hz C. 2,220 Hz D. 2,575 Hz E. 2,750 Hz
A rod, with sides insulated to prevent heat loss, has one end immersed in boiling water 100°C and the other end in a water-ice mixture at 0.00°C
The rod has uniform cross-sectional area of and length of Under steady state conditions, the heat conducted by the rod melts the ice at a rate of every 34 seconds. What is the thermal conductivity of the rod? (The heat of fusion of water is What will be an ideal response?