Wha causes a star to die out

Which of the following is a complex machine? 1) piano 2) bottle opener 3) shoehorn 4) doorknob

Your friend of mass 50 kg can just barely float in fresh water. Calculate her approximate volume.

A train travels 55 kilometers in 2 hours, and then 52 kilometers in 5 hours. What is its average speed?

A common demonstration involves charging a rubber balloon, which is an insulator, by rubbing it on your hair and then touching the balloon to a ceiling or wall, which is also an insulator.

Which of the following does culture contribute to the preferences and behaviors of consumers?

What happened to the test charge when brought near another positive charge, and how did you use this fact to score a goal only using positive charges? Explain for both the practice charge and more difficult levels.

You get up in the morning, get dressed, eat breakfast, walk to the bus stop, and ride to school. List three different energy transformations that have taken place.

If you lived by the sea, what effect of the moon would you see? Describe the effect.

20g of ice at 0℃ is mixed with 20g of hot water at 60℃. Then amount of water in mixture in equilibrium condition will be

A person cannot see clearly objects closer than 2.00 m from her/him. What is the refractive power (in diopters) of the correction lenses that will allow her/him to clearly see objects located 30.