How do the molecules of cold water differ from the molecules of hot water? -Answer choices

The molecules of cold water have fewer heat molecules mixed with them.

The molecules of cold water have more mass than the molecules of hot water.

The molecules of cold water are larger than the molecules of hot water.

The molecules of cold water are closer together than the molecules of hot water.
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Aparticle of mass m is projected with an initial velocity v0 in a direction making an angle α with the horizontal level ground as shown in the figure. the motion of the particle occurs under a uniform gravitational field g pointing downward. (a) write down the lagrangian of the system by using the cartesian coordinates (x, y). (b) is there any cyclic coordinate(s). if so, interpret it (them) physically. (c) find the euler-lagrange equations. find at least one constant of motion. (d) solve the differential equation in part (c) and obtain x and y coordinates of the projectile as a function of time. (e) construct the hamiltonian of the system, h, and write down the hamilton’s equations (canonical equations) of motion.

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

What are the factors that affect the resistance of a wire?