How long does it take light from the center of the Milky Way, 8.3 kpc away, to reach the Solar System? (Express your answer in years.)

The standard bulbs (standard candles) that made it possible for astronomers to discover the acceleration in the expansion of the universe were 

Which method is used to convert all characters in a string to uppercase?

The figure below shows the H-R diagram of a star cluster. How old is it? (The dashed line is the position of the stars. The solid line is the main sequence.) You can estimate the life of a main-sequence star by using t = 1010 M/L years (M and L in solar units).

A galaxy has a recession velocity of 18,250 kilometers per second. What is its distance in megaparsecs? Use Hubble constant, 70 km/sec per Mpc. 

Question: What is the output of the following code?   class MyClass:     def __init__(self, value):         self.value = value obj = MyClass(10) obj = MyClass(0) print(obj.value)

Question: In the program below, what are the primary function(s) of the line this->value = value. (Select ALL that apply).   #include using namespace std;   class MyClass {   int value;   public:     MyClass(int value) : value(value) {}     void setValue(int value) {       this->value = value;   }   MyClass& increment() {     value++;     return *this;   }                   void print() {     cout

Suppose your program contains the following class definition ( along with definitions of the member functions):    class YourClass { public:    YourClass( int newInfo, char moreNewInfo);    YourClass( );    void doStuff( );  private:    int information;     char moreInformation;  };    Question: Which of the following is NOT legal? 

A class describes a set of objects with the same behavior. 

In the C++ code below, which of these statements are true? (Select ALL that apply)   int a = 10; int *p = &a;