Ball A of mass 0.1 kg is dropped from rest from a certain height. Ball B of mass 0.2 kg is dropped from rest from the same height. Ignoring air resistance, which of the following will be different for these two balls?
(A) impact speed with the ground (C) magnitude of momentum at impact with the ground
(B) time to fall to the ground (D) acceleration during the fall

The least penetrating form of radiation is

The chart shows the costs and shipping times for materials that a company needs to build a new product. which describes the best trade-off if the company needs to start building their product within the next two years? they should order the domestic materials because it is always best to choose the fastest shipping time. they should order the imported materials because it is always best to choose the lowest cost for materials. since the shipping time is longer, they should order the domestic materials because the additional cost is worth it to get the materials in time. even though the shipping time is longer, they should order the imported materials because they are less expensive and should arrive in plenty of time to build the product.

If the specific heat of a metal is 0.850 j/g °c, what is its atomic weight?