The first periodic table of elements Mendeleev created contained how many elements

A maroon plane has a takeoff speed of 88.3 m/s and requires 1635 m to reach that speed. Determine the acceleration of the plane

What's heavier a pound of feathers or a pound of stones?

2. You know that the normal temperature for a healthy person is about 98.6 Fahrenheit degrees. Express this temperature in degrees Celsius. F = 1.8C + 32.

Who developed the atomic theory of matter? john dalton niels bohr marie curie ernest rutherford?

Kimberly, Alex, and Fernando built small sailboats in science class. Their boats have the following weights: Kimberly: 150 grams Alex: 175 grams Fernando: 200 grams Think about how much force is needed to move each boat.

Why is it important for engineers to design bumper cars safely

What must her minimum speed be just as she leaves the top of the cliff so that she will miss the ledge at the bottom, which is 1.75 m wide and 9.00 m below the top of the cliff?

Which statement describes how light behaves when it strikes a translucent material? A. Light is scattered. B. Light is transmitted. C. Light is reflected. D. Light is absorbed.

A certain gas is present in a 15.0 l cylinder at 2.0 atm pressure. if the pressure is increased to 4.0 atm the volume of the gas decreases to 7.5 l.

Choose all the answers that apply. To qualify as a planet, a celestial object must: have an irregular shape revolve around the sun orbit in a clear area have enough gravity to have a spherical shape have a satellite