Which are principles of dynamics

Two planets have the same surface gravity, but planet b has twice the mass of planet a. if planet a has radius r, what is the radius of planet b?

An electron is accelerated through a potential difference of 3.1 kV and directed into a region between two parallel plates separated by 17 mm with a potential difference of 100 V between them.

Aaron Agin nodded off while driving home from play practice this past Sunday evening. His 1500-kg car hit a series of guardrails while moving at 19.8 m/s. The first guard rail delivered a resistive impulse of 5700 N•s.

Describe the issues with hypnotic regression.

As an object moves downhill, some of the energy is A. kinetic and some is potential B. kinetic C. lost due to friction D. potential I tryed C! Its not right

To rid the body of wastes, including excess water and salts" is the purpose of what human body system? A) Digestive B) Excretory C) Skeletal D) Nervous

What's the transmission of heat requiring the movement of a liquid or a gas is?

Wich section of a business plan should come first but be written last?

Lemonade powder is stirred into water until it dissolves. Which are true statements? Check all that apply. A. Lemonade is the solute. B. Water is the solvent. C. Lemonade is the solvent. D. Water is the solute.

Nikolas, the fire extinguisher, and the skateboard have a combined mass of 50 kg. What force would the fire extinguisher have to produce to propel Nikolas if he wanted to accelerate at a rate of 1.