Thursday
July 31, 2014

Homework Help: science

Posted by michelle on Monday, January 8, 2007 at 1:18am.

what is the kinetic energy, in J, of

a)an Ar atom moving w/ a speed of 650m/s

b)a mole of Ar atoms moving w/ a speed of 650m/s?

a) K.E. = (1/2) M V^2
For M, use the mass of an Argon atom. It equals 0.040 kg (40 g) divided by Avogadro's number. M must be in kg to get the K.E. in Joules

b) Multiply the (a) result by Avogadro's number.

thanx

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

physical science - Which of the following four bodies has the greatest kinetic...
physics - 4. Two masses of 3 kg and 5 kg collide head-on, the former moving to ...
Physical Science - Can someone please check these answers for me? Write T for ...
physics - The mass of a carbon atom is 2 x 10 ^ -26. What is the kinetic energy ...
physics - The mass of a carbon atom is 2 x 10 ^ -26. What is the kinetic energy ...
physics - How do i find this? A shooting star is a meteor that burns up when it ...
physics - a rolling ball covers a distance of 650m in 20 min. its speed in ...
science - an object moving at a speed of 1m/s has a kinetic energy of 5 J what ...
Physics - A car with a total mass of 1.48 103 kg has wheels of radius 33.5 cm ...
Algebra II - The kinetic energy of a moving body is directly proportional to ...

Search
Members