Can a vector with a non zero component be zero?

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy.work depends on the square of the change in potential energy.work is equal to the negative of the change in kinetic energy.work is equal to the square of the change in kinetic energy