Name four type of friction and give one example for each

A 6 kilogram cat is resting on top of a bookshelf that is 3 meters high. What is the cat's gravitational potential energy relative to the floor?

A cold block of metal is placed in contact with a warm block of metal. Which type of energy will be transferred between the blocks? thermal energy chemical energy electrical energy mechanical energy

What will atoms do in a chemical reaction?

Which elements will bond ionically with barium such that the formula would be written as BaX2? A) Nitrogen, Chlorine, and Sodium B) Chlorine, Iodine, and Fluorine C) Hydrogen, Bromine and Aluminum D) Oxygen and Sulfur

A car of mass 998 kilograms moving in the positive y-axis at a speed of 20 meters/second collides on ice with another car of mass 1,200 kilograms moving in the negative x direction with a speed of 17 meters/second.

A truck moving at 45 m/s passes a police car moving at 36 m/s in the opposite direction. if the frequency of the siren is 500 Hz relative to the police car, what is the frequency heard by an observer in the truck after the police car passes the

How do you increase the mechanical advantage of a ramp?

Which of the following groups of moon phases are above the horizon at 8 am? A third quarter, waning crescent, and waxing gibbous OB. new Moon, third quarter, and waning gibbous OC. waxing gibbous, full Moon, waning gibbous O D.

The Yerkes refracting telescope has a 1.00 m diameter objective lens of focal length 20.0 m. Assume it is used with an eyepiece of focal length 2.50 cm. (a) Determine the angular magnification of the planet Mars through this telescope.

What must a mechanical wave travel through