Topic : atom and static electricity At the end of each statement, write TRUE if the statement is correct or FALSE if the statement is incorrect
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a) Static electricity constantly flows in the same direction.

b) If there is a build-up of static electricity on the skin, it will be transferred if anything that is made of metal is touched.

c) Two negatively charged rods will repel each other.

d) Rubbing two dry non-metals vigorously can produce static electricity.

e) Friction causes static electricity.

f) The thunder ‘rolls’ then the lightning ‘flashes’.

g) A negatively charged object has lost its positive charge.

h) Electrons and protons are both negatively charged.

i) All materials are made up of equal negative and positive charges.

j) A balloon that has been rubbed with wool sticks to the wall.

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.