Roger builds an electromagnet by coiling some wire around an iron bolt and connecting the wire to a battery. The electromagnet is strong enough to lift paper clips. Which option describes what is happening here?
Select one:

Electrical energy is used to produce gravitational force.

Kinetic energy is used to produce gravitational force.

Electrical energy is used to produce magnetic force.

Kinetic energy is used to produce magnetic force.

What type of solution is formed if 10 g of kclo3 are dissolved in 100g of water at 30

Lab reagent, hypothesis test. a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl. these six measurements are assumed to be an srs of all possible measurements from solution. they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution. carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?