double the distance = divide strength by 4
force is based upon mass and acceleration.the statement is not always true.
it can be explained from newton's second law of motion.
as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.
mathematically it can be written as -
here k is the proportionality constant whose value is 1.
[a is the acceleration=dv/dt]
hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.
hence the statement that force is based upon mass and acceleration is false.
you'd use the equation that establishes a relationship between energy and wavelength, which looks like this
λ - the wavelength of the photon; c - the speed of light, usually given as 3⋅108m/s; h - planck's constant, equal to 6.626⋅10−34j s
plug the value you were given for the energy of the photon in the above equation to get the wavelength