An element's atomic number is 13. How many protons would an atom of this element have?

If Aristotle and Quintilian had a debate about rhetoric, which would likely argue that it is a means to communicate and persuade, and nothing more?

a care starting from rest has an acceleration 0.3 m/s square, calculate the velocity and distance travelled by this car after 2 minutes?

A 920 kg sports car collides into the rear end of a 2300 kg suv stopped at a red light. the bumpers lock, the brakes are locked, and the two cars skid forward 3.3 m before stopping.

Explain what the two teams of astronomers found in the 1990s. What question did their discovery create?

What is the frequency of a wave that has a wavelength of 20 cm and a speed of 10 m/s? 50 Hz 200 Hz 0.5 Hz 10 Hz

Consider the incomplete equation below Superscript 4 subscript 2 upper H e plus superscript 4 subscript 2 upper H e right arrow question mark.

When the temperature of a gas decreases at constant volume, its a. pressure increases. b. mass increases. c. pressure decreases. d. particles move faster.

A 12-V battery is connected to an air-filled capacitor that consists of two parallel plates, each plate has an area of 7.60 cm2 . The separation between the plates of the capacitor is d = 0.30 cm.

Why do you believe knowing how elements and compounds react together Is essential In every day matters?

A bullet with a mass 2.25g is fired up into the air with a velocity of 187.5 m/s. What is the maximum height of the bullet