X-rays are used in medical applications to produce images of Bones tissues and organs x-rays are capable of penetrating tissue such as Skin but are less capable of penetrating bone this property of x-rays derives from which characteristic of the Rays a. their short wavelengths
b. their long wavelengths
c. their small amplitudes
d. their large amplitudes ​

the answer is a. the yacht traveled from the dock north to the 200-meter marker in the bay in less than 5 minutes, giving the passengers several more hours to fish.

im doing peak rn so sry if its wrong

b. lifting dumbbell weight at 20-degree angle from the body after a 45-degree angle

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.