bankscorneliuso39

23.04.2020 • 

Mathematics

A chain lying on the ground is 19 meters long and its mass is 84 kilograms. The chain is threaded through a pulley, which is fixed to the ground, and pulled directly up so that it forms the shape of an L. How much work is required to raise one end of the chain to a height of 7 meters? Use that the acceleration due to gravity is 9.8 m/s^2. You may assume that the chain slides effortlessly and without friction along the ground as its end is lifted.

Ответ:

Ashtree519

11.03.2020

Mathematics

---

The expression that represents  the amount of tax Betty has to pay in 0.08(75h) + 75h is 0.08. Taxes are represented as decimals/fractions/rates. The costs is 75 dollars an hour so 75 * h = 75h. To find the tax, we need we need to multiply 0.08 times 75 times number of h(hours)

---

0,0(0 оценок)