Y is directly proportional to x. When = 4, = 12.(a) Find the equation of y in term of x. (b) Find the value of y when x=7

If the radius of curvature of the cornea is 0.75 cm when the eye is focusing on an object 36.0 cm from the cornea vertex and the indexes of refraction are as described before, what is the distance from the cornea vertex to the retina? express your answer to two significant

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

During a car accident, a 125kg driver is moving at 31m/s and in 1.5s is brought to rest by an inflating air bag. what is the magnitude of the change in momentum to the driver