True or false: all atoms of an element have the same number of protons in the nucleus?

Which can occur in a physical change? The mass can increase The particles can arrange in different ways The mass can decrease. The atoms can bond to different atoms.

Ions can have a positive or negative charge. a. True b. False

A wave has a wavelength of 8 mm and a frequency of 11 hertz. What is its speed? Your Answer:?

Which of these is not a part of the cardiovascular system?

What does gravitational potential energy depend on?

A conductor, with outer surface labelled a, contains a cavity, inner surface b. In this cavity there is a conducting sphere of radius r, and surface c. The sphere carries a charge of 1 C, while the conductor a charge of 2 C.

A spring (k = 790 N/m) has a length of 48 cm when zero net force is applied to it. What will its length be when 230 N of force is applied to stretch it? Question 3 options: 3.4 m 0.77 m 3.9 m 0.29 m

Inert gas used to make bright city lights True or False

A boulder on top of a cliff has a potential energy of 12400J. How high above is the boulder?

If the graph represents speed what is measured on the x and y axes