Comparing infrared and ultraviolet, we can say that . Comparing infrared and ultraviolet, we can say that . ultraviolet has longer wavelength and lower photon energy ultraviolet has longer wavelength and higher photon energy infrared has longer wavelength and lower photon energy infrared has longer wavelength and higher photon energy

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

How does an observation about an object differ from an inference about that object