1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
stepan [7]
3 years ago
11

What is efficiencywhat is the formula of mechanical advantage and velocity ratio of labour ​

Physics
1 answer:
sdas [7]3 years ago
6 0

Answer:

Mechanical Advantage = Output Force/Input Force

Velocity Ratio = Driving Gear/Driven Gear

Explanation:

You might be interested in
An 85-kg rock climber, when reaching the summit, built up 250,000 J of gravitational potential energy. How high did the climber
Vesna [10]

It's 300! I just got it correct:)

3 0
3 years ago
Read 2 more answers
Find the moments of inertia Ix, Iy, I0 for a lamina that occupies the part of the disk x2 y2 ≤ 36 in the first quadrant if the d
Tasya [4]

Answer:

I(x)  = 1444×k ×{\pi}

I(y)  = 1444×k ×{\pi}

I(o) = 3888×k ×{\pi}  

Explanation:

Given data

function =  x^2 + y^2 ≤ 36

function =  x^2 + y^2 ≤ 6^2

to find out

the moments of inertia Ix, Iy, Io

solution

first we consider the polar coordinate (a,θ)

and polar is directly proportional to a²

so p = k × a²

so that

x = a cosθ

y = a sinθ

dA = adθda

so

I(x) = ∫y²pdA

take limit 0 to 6 for a and o to \pi /2 for θ

I(x) = \int_{0}^{6}\int_{0}^{\pi/2} y²p dA

I(x) = \int_{0}^{6}\int_{0}^{\pi/2} (a sinθ)²(k × a²) adθda

I(x) = k  \int_{0}^{6}a^(5)  da ×  \int_{0}^{\pi/2}  (sin²θ)dθ

I(x) = k  \int_{0}^{6}a^(5)  da ×  \int_{0}^{\pi/2}  (1-cos2θ)/2 dθ

I(x)  = k ({r}^{6}/6)^(5)_0 ×  {θ/2 - sin2θ/4}^{\pi /2}_0

I(x)  = k × ({6}^{6}/6) × (  {\pi /4} - sin\pi /4)

I(x)  = k ×  ({6}^{5}) ×   {\pi /4}

I(x)  = 1444×k ×{\pi}    .....................1

and we can say I(x) = I(y)   by the symmetry rule

and here I(o) will be  I(x) + I(y) i.e

I(o) = 2 × 1444×k ×{\pi}

I(o) = 3888×k ×{\pi}   ......................2

3 0
3 years ago
Suzy drives 10 miles north then drives 24 miles west. What is her total distance traveled?
anzhelika [568]

Answer:

34

Explanation:

5 0
3 years ago
Three objects of the same mass begin their motion at the same height. One object falls straight down, one slides down a low-fric
erik [133]

Answer:

D. Same

Explanation:

Because only gravity is doing the work on the objects, and gravity is constant for all the objects

4 0
3 years ago
Which scientist is often called the “father of the atomic bomb” because of his work as the head of the manhattan project?
kirza4 [7]

Answer:

J. Robert Oppenheimer

Explanation:

He led the Manhattan project and created the first nuclear bomb in WWII

8 0
3 years ago
Other questions:
  • What is the spring constant for a supermarket scale that stretches 0.01 m when a force of 4 N is applied
    9·2 answers
  • Can the reaction distance be a negitive?
    8·1 answer
  • If you could choose between sleeping a full night on earth or a full night on jupiter which would you choose
    6·2 answers
  • How much heat is given off by 1,000 kg of lead when it solidifies at its melting point?(see the table)
    9·1 answer
  • This table shows the acceleration due to gravity on four planets. Planet Gravity (m/s2) Earth 9.8 Mercury 3.7 Neptune 11.2 Uranu
    9·2 answers
  • What is surface water or runoff?
    11·1 answer
  • D. 'g' vanishes at centre of
    9·1 answer
  • What causes an object to be attracted to another object due to electrostatic forces?​
    9·1 answer
  • Why do we not consider the strong nuclear force when we describe the forces between atoms?
    7·1 answer
  • A cylinder-piston system contains an ideal gas at a pressure of 1.5 105 pa.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!