In the equation 234Th90 - > 234Pa91 + X, which particle is represented by X?

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

Which type of radiation on the electromagnetic spectrum has the greatest energy and why?

Snoopy throws a ball horizontally at 25 m/s from a roof that is 15 m high to hit the cat next door. The ball misses the cat. How far does the ball travel before hitting the ground? How long does it take to hit the ground?

A cube with sides of length 2cm has a mass of 7.36g. calculate the density of the cube

Density is calculated by dividing

A Find the magnitude of the angular momentum of the second hand on a clock about an axis through the center of the clock face. The clock hand has a length of 15.0 cm and a mass of 6.00 g.

A geologist finds ripples preserved in ancient sedimentary rock that look just like ripples made by water in mud. He concludes that there was once water in that location that created the ripples. Why is this conclusion reasonable?

In science what is the requirement of doing work?

What Fitness Gram test is assessing your cardiovascular endurance?

A graph titled Position versus time for with horizontal axis time (seconds) and vertical axis position (meters). A straight blue line runs with an upward slope from 0 seconds 3 meters to 4 seconds 15 meters. The starting position of this object is m.