Question 2 The star 61 Cygni, in the constellation Cygnus, is a little more than 11 light-years from Earth. Which of the following correctly estimates the time it
would take to reach 61 Cygni, based on speed of travel?
O
22 years traveling at twice the speed of light
O
11 years traveling at the speed of light
5.5 years traveling at half the speed of light
1.1 years traveling at one-tenth the speed of light

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

Draw metallic bonding if two copper

What’s the theoretical yield of solid lead