What force is required to give an object with mass 125 kg an acceleration of 3
m/s2?
O A. 42 N
B. 375 N
C. 155 N
O D. 255 N
SUBMIT

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.

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?