Describe what causes day and night

Nuclear fusion in our Sun happens when - hydrogen atoms combine to make helium atoms and release energy - uranium atoms break apart and release energy - hydrogen atoms are burned and release energy - helium atoms break apart and release energy

Objects tend to stay moving because of a force called inertia. True or False?

Which statements about electric field lines are correct? Check all that apply.

What is found by multiplying frequency by wavelength?

The greater the mass of an object, the greater its force due to gravity

A tea kettle is warmed on an electric stove. After a while, water vapor builds inside the kettle and causes a whistle in the lid to make a sound. How does this demonstrates the first law of thermodynamics?

A harmonic oscillator is described by the function x (t) 5 (0.200 m) cos (0.350t). Find the oscillator's (a) maximum velocity and (b) maximum acceleration. Find the oscillator's (c) position, (d) velocity, and (e) acceleration when t 5 2.00 s

A database that is flexible and easy to use was recently installed. the data is stored in rows and columns much like a spreadsheet. what type of database must have been installed?

What did johannes kepler contribute to the study of planets

Baseboard heaters are basically electric resistance heaters and are frequently used in space heating. A homeowner claims that her 5-year-old baseboard heaters have a conversion efficiency of 100%.