I need help as fast as possible please ITs DUE IN 10 MINUTES Will mark BRAINLIST and will give thanks only to correct answers
Thank you so much!

1.Where will the image form of the same object is placed in front of the mirror as shown in the picture?

2.How tall is the image?
3.Is the image inverted?
4.Real or virtual?

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?