Recent content by domtar

Homework Statement A 1.0 kg projectile is fired from a point on the Earth's surface at an angle θ = 45° with the horizontal and with an initial velocity v = 30 m/s. Neglect any effects due to air resistance and find: a) What is the kinetic energy of the projectile when it reaches the...

I don't think that's the conclusion I was suppose to arrive at... I'm unsure about the sort of calculations.

Homework Statement The total number of atoms in 1.00 g of CaCO3 (MM = 100.0 g/mol) is: The Attempt at a Solution My solution: 1.00 / 100.0 = 0.01, then 0.01 x 6.022x10^23 = 6.022x10^21 atoms. However, the correct answer is 3.01 x 10^22. How was my approach wrong and did I miss any...

Oh I see, thanks a lot!

Thanks for the reply, but how does the big guy move with zero force applied to him?

1. Tug Of War: Person A is bigger and stronger than Person B, and chooses to neither pull on the rope, or allows Person B to pull Person A forwards. Assume that Person A's force is in the positive direction, graph both forces on one set of axis. Approach: For Person A to neither pull or...