Select all that apply.
the spectrum of star y is compared to a reference hydrogen spectrum. what can be concluded about star y?
reference (normal)
hydrogen spectrum
star y
iii

400
450
500
2009 og r e, inc
600
650

700 750
star y is showing radial motion
star y is moving toward the earth
star y is moving away from the earth
star y is showing transverse motion

connect the batteries in series and hope

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.

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures

answercollision;