The ground state energy of an electron in a one-dimensional infinite potential energy box is 2.0 ev. if the width of the well is halved, the ground state energy will be: (a) 8.0 ev (b) 4.0 ev (c) 2.0 evv (d) 1.0 ev (e) 0.5 ev () none of the above

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2