What is newton's second law of motion?

forces are balanced when they are equal and opposite.

an object at rest or in motion will remain at rest or in motion unless acted upon by an unbalanced force.

the smaller the mass of an object, the greater the acceleration of that object when a force is applied.

the greater the force applied, the greater the acceleration.
every reaction is equal to the force applied.

The ph of your mouth is very similar to that of stomach. true or false?

What is the magnification of a real image if the image is 10.0 cm from a mirror and the object is 50.0 cm from the mirror ? use the equation m=-di/do. a. -5.0 b. 5.0 c. 0.20 d. -0.20

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?