Akettle transfers 2200 w of power. how much energy does it transfer in 120 seconds? also can i have your working out ; )

Determine the fraction of the magnitude of kinetic energy lost by a neutron (m1 = 1.01 u) when it collides head-on and elastically with a target particle at rest which is 21h (heavy hydrogen, m = 2.01 u).

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?

Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?