A 12.65 g sample of a radioactive substance is allowed to decay for 17.22 min. At that time, the sample weighed 3.115 g. What is the half-life for this substance?

What would cause an atom to have a high electronegativity value?

1. Strzała o masie 20 g tuż po wystrzale ma prędkość 50 m/s. Oblicz pracę wykonaną przez zawodniczkę. Ile wynosi energia potencjalna sprężystości napiętej cięciwy? 2. Na trampolinę o współczynniku sprężystości k=2 kN/m stanął zawodnik o masie 80 kg.

Bounce Height (feet) Bounce 1 2 Bounce 2 3 Bounce 3 4 Bounce 4 5 Corita bounced a ball four times. She measured how high the ball bounced each time. She recorded her data in the table.

A frequently quoted rule of thumb in aircraft design is that wings should produce about 1000 n of lift per square meter of wing. (the fact that a wing has a top and bottom surface does not double its area.)

The prediction of the outcome of scientific processes based on analysis.

Which transfer of energy occurs mainly through the process of convection?

The statement, "All basketball players are tall" is a stereotype.

Lonnie pitches a baseball of mass 0.20 kg. The ball arrives at home plate with a speed of 40 m/s and is batted straight back to Lonnie with a return speed of 60 m/s. If the bat is in contact with the ball for 0.

7. What type of mineral can scratch glass, but cannot scratch steel? A. Gypsum B. Diamond C. Feldspar D. Fluorite

What factors determine the electrostatic force between two objects?