Question

1. george holds a magnet above a paper clip. the paper clip moves toward the magnet and sticks to it before the magnet actually touches it. a magnet is surrounded by ______, which applies a push or a pull to an object without actually touching it.○ a simple machine○ a magnetic field○ a generator○ an electric current2. how many you increase the strength of an electromagnet? (select all that apply)□ use a stronger battery, increasing the electricity running through the coil□ glue the wire to the nail□ coil a wire around a nail more times□ add another nail to make the core bigger□ take the nail away, do use one at all□ use a battery with a lower voltage3. what force causes venus to travel along a curved path instead of moving in a straight line as indicated by the dashed line in the diagram?orbits of mercury and venus

Explanation:

First Question:

The described non-contact force from a magnet is a magnetic field, which acts on magnetic materials without direct contact.

Second Question:

Electromagnet strength depends on current, number of wire coils, and core size. A stronger battery increases current, more coils concentrate the field, and a larger core amplifies the magnetism. Other options do not enhance strength.

Third Question:

Celestial objects follow curved orbital paths due to gravitational force from the more massive object (the Sun) pulling them inward, preventing straight-line motion.

Answer:

1. a magnetic field
2. - use a stronger battery, increasing the electricity running through the coil

• coil a wire around a nail more times
• add another nail to make the core bigger

1. Gravitational force (from the Sun)