The gravitational force between two objects is 100 n. if the mass of each object is doubled, what is the gravitational force between the objects at the same distance? 25 n 50 n 200 n 400 n

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.

What are similarities and differences of reflection, refraction, diffraction and absorption?

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?