What is energy efficiency

Can an inert gas in a detention situation be used to ""dampen"" a sharp peak in detonation pressure and convert that peak into a more sustained pressure building?

What kind of interaction would a charged rod have with a neutral styrofoam ball: A. repels it B. attracts it C. doesn't interact depends on the polarity of the charge D. none of these

The gravitational attraction between two objects will blank if the objects move further apart

Why are there so many craters on the Moon and so few on Earth?

Currents circulate in a piece of metal that is pulled through a magnetic field. What are these currents called?

Which of these is not a source of the shock waves that lead to protostars?

Which kind of information is known about a person if that person's DNA is in a database? A. how old the person is B. where the person was probably born C. some diseases the person might have D. whether the person is likely to commit a crime

A science teacher ran a marathon. After the race she showed her students the silver blanket she was given to keep her warm. A group of students investigated how the colour of the blanket affected how much infrared radiation is absorbed

Students asked to measure the temperature of a reaction beaker recorded the following temperatures. 103.7°C, 108.4°C, 105.8°C, 104.6°C The actual temperature is 105.1°C. Which measurement is the most precise

Two atoms that are isotopes of one another must have a different number of what? electrons neutrons protons all particles