When water in a lake freezes, the ice that forms floats on top of any water that is still liquid. Why does the ice float?

Is it C? One alternative to burning non-renewable fuels, which harm the environment, could be to burn biomass. coal. natural gas. petroleum.

What is needed to create a magnetic field?

A force of 450 n accelerates a box across a frictionless surface at a rate of 15 m/s2. what is the mass of the box?

What statement did Niels Bohr make about atoms?

A hydrogen atom has its electron in the n = 6 level. the radius of the electron's orbit in the bohr model is 1.905 nm.

What is the potential energy called that is associated with objects that can be stretched

Which of the following is not a current use of radioisotopes? medical diagnosis sterilization of equipment detection of leaks in building structures light fixtures

A Blu-ray disc is approximately 11 centimeters in diameter. The drive motor of a Blu-ray player is able to rotate up to 10,000 revolutions per minute. (a) Find the maximum angular speed (in radians per second) of a Blu-ray disc as it rotates

A body has translatory motion if it moves along a

What is Nothing. (sorry i have been wondering this for a very long time)