What were most of the elements discovered when Mendeleev developed his original periodic table?

a. gases

b. radioactive

c. liquids

d. solids

A finch rides on the back of a Galapagos tortoise, which walks at the stately pace of 0.060 m/s. After 1.1 minutes, the finch tires of the tortoise's slow pace, and takes flight in the same direction for another 1.5 minutes at 11 m/s.

A given amount of gas at 15 degrees Celsius has pressure P. What will be its temperature if the pressure becomes 3P, keeping volume constant

A student conducts an experiment by dropping a basketball and a box of cereal of the same weight from the top of a building. the student measures the time it takes for each object to strike the ground. what was the student testing?

Galileo used his telescope to discover evidence for the Sun-centered model of the solar system. this evidence included all odds the following except a. venus going through phases b. Venus revolving around Sun, not Earth, c.

Which of these would be the best definition of energy? A) the ability to do work B) the development of a future source of fuel C) the feeling one gets from drinking caffeine D) the feeling one feels after riding a roller coaster

What happens to the speed of the particles if the temperature is increased

A 65-year-old male enters the hospital with high blood pressure, damaged lungs, low blood-oxygen concentration, and throat cancer. What are all of these symptoms associated with?

At a certain factory, 340 kg crates are dropped vertically from a packing machine onto a conveyor belt moving at 1.00 m/s. (A motor maintains the belt's constant speed.) The coefficient of kinetic friction between belt and crate is 0.400.

A hydraulic lift is used to lift a heavy box that is pushing down on a 1.5-m2 piston with a force of 1,700 N. What force needs to be exerted on a 0.12-m2 piston to lift the box?

Rauol's friend Johnny sets out from his house in the city. His displacement is 900 m 80° North of west. What is the x component of his displacement vector?