Which is true of magnetic field lines, but not electric field lines?

A student measures the length and width of a rectangle to be 40.7 cm and 0.599 cm, respectively. Wanting to find the area (in cm2) of this rectangle, the student multiplies on a calculator and obtains a result of 24.3793.

Nydia noted all the information below. Which statement gives quantitative data? Some of the growth rings are wider than others. The tree was 20 years old when it was cut down. A forest fire burned the tree during the years that it was alive.

What is the rocks potential energy when it is 2000 meters above the ground?

What is the magnetic field in the middle of the capacitor plates at a distance d from the center, as a function of time t?

What is the correct displacement for the following vectors: 4km south, 2 km north, 5 km south, and 5 km north?

A copper rod is 0.450 m long. Heat is added to the rod until it expands by 0.00130 m. How much did the temperature change? (Unit=C)

What often happens to light when it travels from one medium to another

60,000 is 100 time as much as

A balloon is expanded to the same volume as that of a human head. Do an order-of-magnitude estimate of the volume of this balloon in cm3.

Which of the following atoms do not usually form bonds