W=mg
<span>Where: </span>
<span>Weight = mass * acceleration due to gravity </span>
<span>So let's say I want to work out my weight on the moon. I know I weigh about 70kg (which would be N), but I can't use that figure for the calculation on the moon. That is what I weigh on Earth, so let's look at the equation... </span>
<span>70kg = mass * 9.81m/s^2 </span>
<span>Where 9.81m/s^2 is the acceleration due to gravity on the surface on the earth. I want to get rid of that, so let's work out my mass by division; </span>
<span>70/9.81 = 7.14kg </span>
<span>I googled the acceleration of gravity on the Moon, which was = 1.6m/s^2 </span>
<span>Let's use that in the same equation W=mg </span>
<span>W = 7.14kg * 1.6m/s^2 = 11.42N
</span><span>On the Moon, you would weigh approximately one sixth of your weight on Earth, so if your bathroom scales tell you you weigh 120 pounds, there you would weigh 20 pounds.
</span>
<span>Moon`s gravitational pull is about one-sixth to the gravitational pull on earth hence weight on moon is about one-sixth of the weight on earth.</span>
X—2 equations combined:
2(2x - 3y) + 3(5x + 2y) = 2(11) + 3(18)
4x - 6y + 15x + 6y = 22 + 54
19x = 76
x = 4
y—1st equation, substitute x:
2(4) - 3y = 11
8 - 3y = 11
3y = - 3
y = - 1
Answer: x = 4, y = - 1
Proof—2nd equation:
5(4) + 2(- 1) = 18
20 - 2 = 18
18 = 18
Answer:
Solution given;
total cost for of the beads and pendants
both necklaces;$10.20
1 necklaces=;$10.20/2=$5.1
beads =cost $1.80
now
each pendant cost =total cost of 1 necklaces-beast cost
=$5.10-1.80
=$3.3
each pendant <u>cost</u>$3.3
7x20x11= 1540
30x4x11=1320
1540+1320=2860
Answer:
90 seedlings
Step-by-step explanation:
Total seedlings to plant = 150
Percentage of seedlings planted = 60%
How many seedlings did we plant during that day?
Number of seedlings planted for that day = 60% of 150
= 0.6 × 150
= 90 seedlings
Number of seedlings planted for that day = 90 seedlings