Which dwarf planet did the NASA Dawn spacecraft enter into orbit around in 2015?
A) Pluto
B) Eris
C) Ceres
D) Haumea
C
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Waves on a String: A wave whose wavelength is 0.500 m is traveling down a 500-m long wire whose total mass is 25 kg and is under a tension of 2000 N.(a) What is the speed of the wave on the wire?(b) Find the frequency of this wave.
What will be an ideal response?
If the sum of both the external torques and the external forces on an object is zero, then the object must be at rest
A) True B) False
In a given reversible process, the temperature of an ideal gas is kept constant as the gas is compressed to a smaller volume. Select the true statement from among the following:
A) The gas must absorb heat from its surroundings. B) The gas must release heat to its surroundings. C) The pressure of the gas also stays constant. D) The process is adiabatic. E) It is impossible to predict on the basis of this data.
A copper metal electrode is in a solution of