What is the mass number of a potassium atom that has 20 neutrons

A negatively charged particle is attracted to A. negatively charged particles, B. positively charged particles, C. only particles that are large. D. all particles that are located close by,

Rafael swings a baseball bat with a force of 25 N. The baseball bat exerts a force of 5 N on the baseball. What is the mechanical advantage of the baseball bat? The mechanical advantage of the baseball bat is

What is the most common source of energy for surface waves

When temperature increases, all BUT ONE of the following increases as well. That is A) wavelength. B) heat energy. C) kinetic energy. D) molecular motion.

Crickets chirpy and milada jump from the top of a vertical cliff. chirpy drops downward and reaches the ground in 2.70 s, while milada jumps horizontally with an initial speed of 95.0 cm>s.

At a temperature of 320K, the gas in a cylinder has a volume of 40.0 liters. If the volume of the gas is decreased to 20.0 liters, what must the temperature be for the gas pressure to remain constant? A. 160 K B. 273 K C. 560 K D. 140 K

It takes a car five seconds to speed up from 20 m/s to 23 m/s. what is the acceleration of the car?

Which of the following is the largest disadvantage of hydropower

Two students standing apart in a classroom have a gravitational force of attraction between them of 3.20 x 10-8 N. If one student has a mass of 50.0 kg and the other has a mass of 60.0 kg, what is the distance between the students?

What are the standard units of measurement for scientific experiments?