A white dwarf converts __________________ energy into _________________ energy
a. nuclear, gravitational b. chemical, potential
c. kinetic, potential d. gravitational, thermal
d
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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
(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 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?
a type of star cluster that contains mostly very old stars is
What will be an ideal response?