A 5 kg toy truck moves to 2 m/s east , it colllides head-on with a2kg toy car moving 5 m/s moving west . What is the total momentum of the system? A) kgm/s 30
B) kgm/s 0
C) kgm/s -20
D) non of it

Athin, square metal plate measures 14 cm on each side and has emissivity of 0.60. the plate is heated to a temperature of 745°c. what is the rate at which the plate radiates energy ? the stefan-boltzmann constant is 5.67 × 10-8 w/(m2 ? k4). remember that the plate will radiate energy from both its top and bottom surfaces.

How have the competing explanations' experiments on atoms affected the development of the atomic model?

What’s #16 asking me and how do i solve it?