6. If a force is applied to an object, but the object doesn't move,
A the work done on the object is positive.
® the work done on the object is negative.
C the work done on the object depends on
the magnitude and direction of the force.
0 no work is done on the object.

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

measuring light intensity

light meters can be used to measure light intensity. the meter is held at the soil surface and pointed in the direction of the maximum light intensity, and then the meter is read.

errors can be made when measuring light intensity by accidentally shading the light meter. the reliability of the results can be checked by taking many samples.

i believe your answer would be c.. : )