user: What is the difference between baking soda and baking powder?

assistant: Baking soda is the common name for a chemical compound called sodium bicarbonate. It usually comes in the form of a white fine powder. It's a versatile product that can be used for baking and cleaning. On the other hand, baking powder is made of baking soda plus cream of tartar and cornstarch. It's typically used for baking and helps your goodies come out light and airy.

user: Were cars used for transportation in the 19th century in King Field?

assistant: <think>
King Field (alternately, Kingfield) is a neighborhood in the Southwest community in Minneapolis, Minnesota. Its boundaries are 36th Street to the north, Interstate 35W to the east, 46th Street to the south, and Lyndale Avenue to the west. King Field, within the King Field neighborhood is a park named after Martin Luther King Jr.

This was farm country in the 2nd half of the 19th century. Transportation was by horse and buggy. Fewer than 20 farms had been established by 1874. C.C. Garvey owned a dairy farm near 44th Street and Grand Ave. George Bichnell farmed 18 acres (73,000 m2) of land from Lyndale to Pleasant, 42nd to 43rd Streets. Hiram Van Nest farmed 28 acres (110,000 m2) of land from 40th to 42nd, Pleasant to Lyndale. The Farmsworth farm occupied 57 acres (230,000 m2) south of 47th Street and East of Nicollet.</think>
No, transportation was by horse and buggy

user: What is electrostatics the study of?

assistant: <think>
The concept of the electric field was introduced by Michael Faraday. An electric field is created by a charged body in the space that surrounds it, and results in a force exerted on any other charges placed within the field. The electric field acts between two charges in a similar manner to the way that the gravitational field acts between two masses, and like it, extends towards infinity and shows an inverse square relationship with distance. However, there is an important difference. Gravity always acts in attraction, drawing two masses together, while the electric field can result in either attraction or repulsion. Since large bodies such as planets generally carry no net charge, the electric field at a distance is usually zero. Thus gravity is the dominant force at distance in the universe, despite being much weaker.
An electric field generally varies in space and its strength at any one point is defined as the force (per unit charge) that would be felt by a stationary, negligible charge if placed at that point. The conceptual charge, termed a 'test charge', must be vanishingly small to prevent its own electric field disturbing the main field and must also be stationary to prevent the effect of magnetic fields. As the electric field is defined in terms of force, and force is a vector, having both magnitude and direction, so it follows that an electric field is a vector field.
The study of electric fields created by stationary charges is called electrostatics. The field may be visualised by a set of imaginary lines whose direction at any point is the same as that of the field. This concept was introduced by Faraday, whose term 'lines of force' still sometimes sees use. The field lines are the paths that a point positive charge would seek to make as it was forced to move within the field; they are however an imaginary concept with no physical existence, and the field permeates all the intervening space between the lines. Field lines emanating from stationary charges have several key properties: first, that they originate at positive charges and terminate at negative charges; second, that they must enter any good conductor at right angles, and third, that they may never cross nor close in on themselves.</think>
The study of electric fields created by stationary charges is called electrostatics.