Heat will flow spontaneously from a cold object to a hot object
Indicate whether the statement is true or false
FALSE
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A 4.0-kg mass on the end of a string rotates in a circular motion on a horizontal frictionless table. The mass has a constant speed of 2.0 m/s and the radius of the circle is 0.80 m. What is the magnitude of the resultant force acting on the mass?
A. 39 N B. 20 N C. 44 N D. 0 N E. 30 N
The heat of fusion for ice at 0 
is 333.7 kJ/kg. What is the energy needed to melt 100 grams of ice at 0.00
A. 39.4 kJ B. 12.7 kJ C. 17.5 kJ D. 25.5 kJ E. 33.4 kJ
In a large tank of liquid, the hydrostatic pressure at a given depth is a function of:
a. depth. c. liquid density. b. surface area. d. Choices a and c are both valid.
The speed for a "low" circular orbit about the Earth is about
A) 1.7 × 104 km/s. B) 7.6 km/s. C) 2.1 km/s. D) 2.5 × 104 km/s. E) 17. km/s.