Explain this statement, " the more class evidence that you have it strengthens the probative value of that evidence"

If 1 lb of fat is stored by the body for each 14.6×103kj of excess nutritional energy consumed, how long will it take this person to gain 1 lb?

If the force on an object is in the negative direction, the work it does on the object must be [2 points a) negative. b) positive c) the work could be either positive or negative, depending on the direction the object moves

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