Why is the mass of an atom's electrons not included in the atom's mass number

What two factors does the strength of the force of gravity between two objects depend on?

A series circuit contains three 2 Ω resistors and a 6 Ω resistor. The current in each resistor is 4.0 A. What is the voltage of the battery in the circuit? 2.0 V 3.0 V 32 V 48 V

A 30 cm3 chunk of platinum weighs 6.3 N. It is carefully submerged in a tub of molasses. One cm3 of molasses weighs 0.013 N. a. What is the weight of the molasses displaced by the platinum? b. Will the platinum sink or float in the molasses?

Sea breezes occur along coastlines and consist of cool air moving toward the shore from the ocean. However, this only occurs during the day and is a stronger effect when the air temperature on the land is greatest and the air temperature above the

In a resonating pipe that is open at one end and closed at the other end, there is a displacement node at the closed end and a displacement antinode at the open end. are displacement antinodes at each end. are displacement nodes at each end.

Stephen buys a new mop he travels 3 km south and the. 4 km east and then 3km north how far does he need to go to get back. To where he started

The elements with the largest atomic radii are found in the

Students will explain, distinguish the difference between the 4 states of matter

Name one way that a mixture can be separated

The Huka Falls on the Waikato River is one of New Zealand's most visited natural tourist attractions. On average, the river has a flow rate of about 300,000 L/s. At the gorge, the river narrows to 20-m wide and averages 20-m deep.