If an object accelerates at 3 m-s-2 when a net force of F, is exerted on it, calculate the net force that must be exerted on it for its acceleration to be 1 m. s-2. Give
your answer in terms of F.​

because growing process had stoped after 4-5 year

at right angles to each other

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.

the speed of the cart after 3 seconds of low fan speed is ⇒ 54.0 cm/s.

the speed of the cart after 5 seconds of medium fan speed is ⇒ 120.0 cm/s.

the speed of the cart after 2 seconds of high fan speed is ⇒ 64.0 cm/s. 

just did the lab.