Which describes the best approach when conducting a scientific experiment?

conduct repeated trials and make sure the experiment can be replicated
conduct a single trial and make sure the experiment can be replicated
conduct repeated trials and make sure the experiment cannot be replicated
conduct a single trial and make sure the experiment cannot be replicated

conduct repeated trials and make sure the experiment can be replicated

Explanation:

The best approach to any scientific investigation is to conduct multiple trials and to make sure the experiment can easily be replicated over and over again.

Multiple trials of an experiment will help further the accuracy and precision of the set up.

One of the important tents of any hypothesis is that it must be testable and easily replicated.

To attain this, multiple trials and replications are carried out.

The correct answer is B

Explanation:

i just give straight answers .-.

a solenoid is created by wrapping a l = 90 m long wire around a hollow tube of diameter d = 4.5 cm.   the wire diameter is d = 0.9 mm.   the solenoid wire is then connected to a power supply so that a current of i = 9 a flows through the wire.

randomized variablesl = 90 m

d = 4.5 cm

d = 0.9 mm

i = 9 a                                          

write an expression for the number of turns, n, in the solenoid. you do not need to take into account the diameter of the wire in this calculation.

calculate the number of turns, n, in the solenoid.

write an expression for the length of the solenoid (l2) in terms of the diameter of the hollow tube d.

calculate the length of the solenoid (l2)   in meters.

calculate the magnitude of the magnetic field at the center of the solenoid in teslas.

explanation:

dec 23, 2016 - a load of bricks weighing 680 n a distance of 10 m across a parking lot. if if the worker pushes the cart with a constant force of 209 n, what work= force x distance = 220 n x 10 m = 2200 n.m = 2200 j i don't know where the person got it from, but the initial part, work= force x distance me.