Explain why the rusting of an iron bar decreases the strength of the bar

What is a main difference between hurricanes and tornadoes? Tornadoes form only over warm water, and hurricanes form only over cold water. Tornadoes happen during the winter, and hurricanes happen during the summer.

Bohr found experimental evidence for his atomic model by studying what?

How many hydrogen atoms could bind with oxygen? A. 0 B. 6 C. 1 D. 2

A car travels 90 km/h. How long does it take for it to travel 400 km

April swims 50 m north and then turns and swims 20m back to south. What is her velocity if it takes her 60 seconds?

a subsrance has an atomic number of 80. How many protons and electrons do atoms of the substance have? what is the subsance?

Ideal meters problem. What internal resistance is ideal for a voltmeter? What internal resistance is ideal for an ammeter?

numerical question : what is the required heat to raise the temperature of 2 kg parrafin by 10 Celsius if 44000 joules is required to raise it by 200 celsius

Psychologists avoid studying emotions because they have little impact on behavior T F

Sheila lives in the seashore community of Beachview. At 6:00 a. m. one morning, she noticed that the local ocean water was at high tide. At approximately noon that same day, she noticed the water was at low tide.