Answer: 65000 × (0.08 × 200 × 0.004) ÷ (800 × 300) = .0
Explanation: .08 × 200 = 16
65000 × (16 × 0.004) ÷ (800 × 300)
16 × .004 = .064
65000 × (.064) ÷ (800 × 300)
65000 × .064 ÷ (800 × 300)
65000 × .064 = 4160
4160 ÷ (800 × 300)
800 × 300 = 240000
4160 ÷ (240000)
4160 ÷ 240000
4160 ÷ 240000 = .01733333333333333
.01733333333333333
Round .01733333333333333 → .00[[]] (Sig Figs: 1)
In a vacuum, all objects fall at the same rate. Meaning that the 100 kg ball will fall at the same speed as the 10 kg ball. Assuming that both objects share the same starting acceleration, they will keep that acceleration until the fall is stopped.
In other words, your answer is the first one, Both objects will accelerate at 9.8 m/s
Answer: Graphite and iodine are non-metals that have lustre.
Explanation:
Graphite is a non-metal which has metallic luster. Metallic lustre is due to presence of free electrons in them, generally non metals don't exhibit this property, but iodine and graphite are non metals they exhibit metallic lustre.
I can't tell right away. The elevator's limit is given in terms of mass, but the four people are listed in terms of their weights. In order to compare them, we'll have to convert one or the other.
The total of the four people's weights is:
John . . . . . . . 850N
Betty . . . . . . . 530N
Robert . . . . . . 740N
Alice . . . . . . . .610N
Total . . . . . . 2,730N
The elevator can't accept more than 300 kg of mass.
The weight of any mass is (mass) x (gravity).
On Earth, 300kg weighs (300kg) x (9.8 m/s²) = 2,940 N.
Wonderful !
2,730N is less than 2,940N.
<em>Yes !</em> According to Otis' engineers, John, Betty, Robert and Alice <em>can safely ride the elevator together</em>, (although Betty and Alice may have a different opinion).
Answer:
PE=0.29J
Explanation:
According to the description, there is a angle and in point swung upward of 70°
So,
![Y=13*10^{-2}*cos(70) \\Y=0.0444m](https://tex.z-dn.net/?f=Y%3D13%2A10%5E%7B-2%7D%2Acos%2870%29%20%5C%5CY%3D0.0444m)
Appling the equation of Potential Energy we have,
![PE=mgh\\PE=(0.35)(9.8)(0.13-0.0444)\\PE=0.29J](https://tex.z-dn.net/?f=PE%3Dmgh%5C%5CPE%3D%280.35%29%289.8%29%280.13-0.0444%29%5C%5CPE%3D0.29J)