In an elastic collision between two bodies of mass m1 and m2, with m2 initially at rest, mass 1 moves off at angle q relative to the direction of its initial velocity and mass 2 at angle f. an exam paper shows the equations below:
m1v1i= m1v1fcosq + m2v2fsinf
0 = m1v1fsinq + m2v2fcosf
what error(s) has the student made?

a. in the first equation, m_2v_2f sin/should be m_2v_2fcosf.
b. in the second equation, m_2v_2fcos f should bem_2v_2fsinf.
c. in the second equation, the plus sign between the terms on the right should be a minus sign
d.. all of the errors listed above.
e. only errors (a) and (b) above.

Aray diagram for a refracted light day is shown. what does the dashed line represent

Blank liquids and gases exert a buoyant force on objects placed in them

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.