When was the copernican treatise published

An object slides without friction in a bowl shaped like a hemisphere. It is released from rest at one edge of the bowl, slides through the bottom, and then slides up the other side before stopping right on the edge of the bowl.

How much kinetic energy does a 50 kg object have if its moving at a velocity of 2 m/s? A) 25 joules B) 50 joules C) 100 joules D) 200 joules

Which statement describes potential energy?

The wavelength of a light wave will affect the light's frequency and color frequency and amplitude amplitude and color color

An insulated container with a divider in the middle contains two separated gases. Gas 1 is initially at a higher temperature than gas 2. The divider is then removed.

What would happen if earth gravity suddenly disappeared?

How many layers of material were the roads made of? a. two c. four b. three d. five

Red light has a shorter wavelength than yellow light.

Approximately what is the parallax angle of a star that is 20 light-years away?

If the Earth and distant stars were stationary (motionless) in space, what would we observe about the wavelength from these stars? A. Wavelengths measured would match the actual wavelengths emitted. B.