Which of the following is an irregular galaxy that can be seen from the Southern Hemisphere?
a. The Crab Nebula
b. The Sagittarius Dwarf
c. The Small Magellanic Cloud
d. The Horsehead Nebula
c
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The energy of an oscillating atom in a blackbody can be any value within a certain limited range
a. True b. False Indicate whether the statement is true or false
A 25-g traffic light hangs midway on a cable between two poles 40 meters apart. If the sag in the cable is 0.40 meters, what is the tension in each side of the cable?
a. 12,200 N c. 4900 N b. 9800 N d. 6100 N
A family goes on vacation for one week but forgets to turn off an electric fan that consumes electricity at the rate of 200 W. If the cost of electricity is 12.0ยข/kW?h how much does it cost (to the nearest penny) to run the fan for the week?
What will be an ideal response?
When a car goes around a curve of smaller and smaller radius, the centripetal force on it decreases
a. True b. False Indicate whether the statement is true or false