Matthew is waterskiing. As the boat starts moving, he is at an angle of 8.0 degrees to the right of the boat. The boat applies 250 newtons over the first 50 meters, while the angle stays at roughly 8.0 degrees. What work has the boat done on Matthew?

Explanation:

Work is said to be done when a force applied to a body cause the body to move over a distance.

Work done = Force * distance

W = fdsinθ

Given

Force = 250N

distance = 50m

θ = 8.0°

Substitute into the formula to and calculate work:

Work = 250*50 sin8.0°

Work = 12,500sin8.0°

Work = 1739.66 Joules

Hence the boat has done  1739.66 Joules of work on Matthew

The answer is D. 1.7 x 10^4 on Plato

  1.the balanced   chemical equation is as below

cu +   2 ag(no)₃ → cu(no₃)₂   +2 ag

2.the   much silver   produced   is   50.9 g

step 1: find the   moles of cu

moles =   mass÷   molar mass

  from periodic table the molar mass of cu = 63.5 g/mol

moles is therefore = 15.00 g÷ 63.5 g/mol = 0.236   moles

step 2: use the mole ratio to determine the   moles of ag

from equation above   cu: ag   is 1: 2

therefore the moles of ag   =0.236   moles   x 2/1 =0.472   moles

step 3: find the mass   of ag

mass = moles x molar mass

from periodic table   the molar mass of ag =107.87 g/mol

mass   = 0.472   moles x 107.87 g/mol = 50.9 g

3.   the   much   silver   collected worth is   1.797 oz

  convert   50.9 g   to oz

that is   1 gram = 0.0353 oz

          50.9 grams =?   oz

by cross multiplication

={(50.9 grams x 0.0353 oz) / 1   gram}   =1.797 oz

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.