1) In the formula given for the calculation of work, the variable F represents: A) The angular coordinate of the vector d when it is written in polar coordinates B) The scalar magnitude of the force doing work C) The angular coordinate of the vector F when it is written in polar coordinates D) The scalar magnitude of the displacement through which the system moves while the force isapplied E) The direction of the force acting on the system F) The angular difference between the vectors F and d G) The diameter of the system H) The weight, or force due to gravity, on the system I) The work done by the force F

1) In the formula given for the calculation of work, the variable F represents:

A) The angular coordinate of the vector d when it is written in polar coordinates

B) The scalar magnitude of the force doing work

C) The angular coordinate of the vector F when it is written in polar coordinates

D) The scalar magnitude of the displacement through which the system moves while the force isapplied

E) The direction of the force acting on the system

F) The angular difference between the vectors F and d

G) The diameter of the system

H) The weight, or force due to gravity, on the system

I) The work done by the force F

2) In the formula given for the calculation of work, the variable d represents:

A) The angular coordinate of the vector d when it is written in polar coordinates

B) The scalar magnitude of the force doing work

C) The angular coordinate of the vector F when it is written in polar coordinates

D) The scalar magnitude of the displacement through which the system moves while the force isapplied

E) The direction of the force acting on the system

F) The angular difference between the vectors F and d

G) The diameter of the system

H) The weight, or force due to gravity, on the system

I) The work done by the force F

3) In the formula given for the calculation of work, the variableθ represents:

A) The angular coordinate of the vector d when it is written in polar coordinates

B) The scalar magnitude of the force doing work

C) The angular coordinate of the vector F when it is written in polar coordinates

D) The scalar magnitude of the displacement through which the system moves while the force isapplied

E) The direction of the force acting on the system

F) The angular difference between the vectors F and d

G) The diameter of the system

H) The weight, or force due to gravity, on the system

I) The work done by the force F

4) A joule is a compound unit equivalent to:

A) N·s

B) m/s

C) N/m

D) kg·m

E) N/s

F) kg·m/s²

G) N·m

5) Joule is the standard unit for measuring which of the following? Select all that apply

A) mass

B) position

C) velocity

D) acceleration

E) work

F) force

G) time

H) energy

I) electric charge

6) In the formula for the kinetic energy of a system, the variable v represents:

A) initial velocity of the system

B) final velocity of the system

C) change in velocity of the system

D) velocity of the system

E) initial speed of the system

F) final speed of the system

G) change in speed of the system

H) speed of the systemI) volume of the system

7) The formula in equation 7.27 is very carefully written and explained. We’ve seen several examples so far of equations with deltas (Δ) but in them, there is a delta on either side of the equation. The left hand side of the equation here, in words, says “the change in the gravitational potential energy.” It is perhaps not obvious from looking at the right hand side of the equation which of these variables represents the change that causes a change to the gravitational potential energy on a system. Which variable “contains” the delta and what does it mean?

A)m=Δm - the mass of the system of interest changes during the period the calculation considersbecause mass is expelled out of the system

B)m=Δm - the mass of the system of interest changes during the period the calculation considersbecause mass is constantly increasing

C)m=Δm - the mass of the system of interest changes during the period the calculation considersbecause the Higgs interaction increases in time

D)g=Δg - the magnitude of the gravitational acceleration of the system of interest changes during theperiod the calculation considers as the force of gravity increases

E)g=Δg - the magnitude of the gravitational acceleration of the system of interest changes during theperiod the calculation considers as the force of gravity decreases

F)g=Δg - the magnitude of the gravitational acceleration of the system of interest changes during theperiod the calculation considers because the Earth is rotating

G)h=Δh - the height of one part of the system changes relative to the rest of the system during theperiod the calculation considers

H)h=Δh - the height of the entire system of interest and all its parts changes during the period thecalculation considers

I)h=Δh - the height of the system of interest changes during the period the calculation considersbecause the Earth is orbiting the Sun.