PWANI ZONE 2019
FORM VI 2
the tension in the skin of the left venticle of the heart is 4.9N/m. a 4cm cut is made on the left ventricle during open-heart surgery. how many stitches must be used to repair the cut? each stitch will safely support a tension of 0.4N

hèllo, sorry i really need some more points so if you need this qustion answered than retype it

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.

false.

explanation:

this statement is false. after falling for 5 seconds, its speed will not be 100 m/s.