A 5cm object is located 12 cm from a convex mirror with a focal length of 14cm. Calculate the
a) Image position

Aplanet of mass m 6.75 x 1024 kg is orbiting in a circular path a star of mass m 2.75 x 1029 kg. the radius of the orbit is r 8.05 x107 km. what is the orbital period (in earth days) of the planet tplanet?

Aforce of 9.00 newtons acts at an angle of 19.0 to the horizontal. what is its component in the horizontal direction?

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.