A 3.0-kg block slides on a frictionless 20° inclined plane. A force of 16 N acting parallel to the incline and up the incline is applied to the block. What is the acceleration of the block?
a. 2.0 m/s2 down the incline
b. 5.3 m/s2 up the incline
c. 2.0 m/s2 up the incline
d. 3.9 m/s2 down the incline
e. 3.9 m/s2 up the incline
C
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The surface of the neutron star RXJ2015 has a temperature of 10 million K. This neutron star emits radiation most strongly in
A) x-ray light. B) visible light. C) radio light. D) infrared light.
A pipe of length 10.0 m increases in length by 1.5 cm when its temperature is increased by 72°F. What is its coefficient of linear expansion?
a. 38 × 10^?6/°C b. 75 × 10^?6/°C c. 68 × 10^?6/°C d. 28 × 10^?6/°C e. 47 × 10^?6/°C
_____ is a process by which an organism extracts energy from the surroundings, maintains itself, and modifies the surroundings to foster its own survival and reproduction
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