4. A truck has four times the mass of a car and is moving with twice the speed of the car.
If KE, and KE, refer to the kinetic energies of truck and car respectively, it is correct to say
that: (KE = 72 my?)

Relation between kinetic energy of truck and kinetic energy of car is given as

Explanation:

As we know that mass of truck is four times the mass of car

and the speed of truck is double that of speed of car

now we have kinetic energy of the truck is given as

similarly kinetic energy of car is given as

now from above two equations we have

so we have

the following is queen elizabeth’s purposes:

- to encourage the parliament that the technique of picking successors to the seat based merely on birthright needs to be reviewed.

- (not) to convince the parliament that her kid should not be measured as a likely choice for heir to the english power.

- to persuade the parliament that merely since she has a child does not assure that the kid will be a capable leader.

- to sway the parliament how shattering it could be if they proceeded discourteously concerning her or her child.

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.