Length of one division of main scale of a vernier calliper is 0.1 cm and that of scale is 0.9 cm. Find the value of vernier constant. (a) 0.1 cm (b) 0.01 mm (c) 0.01 cm (d) 0.05 cm​

50 g of ice at 0°c is dropped in a beaker containing 100 g of water at 0°c. what will be the contents of the beaker after 5 hours? assume that the room temperature is 0°c.

**urgent** roberto plans to use two transformers to reduce a voltage of 120 v to 4 v. he uses a transformer that has 300 coils in the primary winding and 50 coils in the secondary winding. he has four other transformers, as listed in the table. which transformer should roberto use to have an ending voltage of 4 v? a- w b-xc- yd- z

Does heating a metal wire increase or decrease its electrical resistance? why?