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
igomit [66]
3 years ago
7

A machine raised a load of 360N through a distance of 0.2m. The effort, a force of 50N moved 1.8m during the process. Calculate

the efficiency of the machine.
Select one:
a. 40%
b. 100%
c. 80%
d. 60%
Physics
1 answer:
frosja888 [35]3 years ago
6 0

Answer:

c. 80%

Explanation:

Given;

load raised by the machine, L = 360 N

distance through which the load was raised, d = 0.2 m

effort applied, E = 50 N

distance moved by the effort, e = 1.8 m

The efficiency of the machine is calculated as follows;

Efficiency = \frac{ 0utput \ work }{1nput \ work} \times 100\% \\\\Efficiency = \frac{Load \ \times \ distance \ moved \ by \ load }{Efort \ \times \ distance \ moved \ by \ effort} \times 100\%\\\\Efficiency = \frac{360 \times 0.2}{50 \times 1.8} \times 100\%\\\\Efficiency =80\%

Therefore, the efficiency of the machine is 80%

You might be interested in
What earthquake damage is Texas likely to suffer
kumpel [21]
-- Most of the southern part of the state is considered to have
no risk of damage.

-- Most of the upper part of the state is considered to be at risk
for only minor damage.

-- A tiny part of the state, in the 'Big Bend' region in the west, is
considered to be at risk for moderate damage.
3 0
3 years ago
Read 2 more answers
When resistance is decreased in a circuit, current will _________.
Mars2501 [29]
The answer is A. Increase

The formula is <span>Voltage = Resistance X Current

Lets say the voltage is 10 and the resistence is 5

10 = 5 x current
Current = 2

Now, lets decrease the resistence from 5 to 2

10 = 2 x Current
Current = 5

The current increases
</span>
8 0
3 years ago
M A hockey player is standing on his skates on a froze pond when an opposing player, moving with a uniforn speed of 12 m/s, skat
Anni [7]
<span>A car with a mass of 1500kg starts from rest and accelerates to a speed of 18m/s in 12s. Assume that the force of resistance remains contant at 400N during</span>
8 0
4 years ago
A monochromatic light falls on two narrow slits that are 4.50 um apart. The third destructive fringes which are 35° apart were f
STatiana [176]

Answer:

 y = 1.19 m  and λ = 8.6036 10⁻⁷ m

Explanation:

This is a slit interference problem, the expression for destructive interference is

          d sin θ = m λ

indicate that for the angle of θ = 35º it is in the third order m = 3 and the separation of the slits is d = 4.50 10⁻⁶ m

          λ = d sin  θ / m

let's calculate

          λ = 4.50 10⁻⁶ sin 35  /3

          λ = 8.6036 10⁻⁷ m

for the separation distance from the central stripe, we use trigonometry

         tan θ= y / L

         y = L tan θ

the distance L is measured from the slits, it indicates that the light source is at x = 0.30 m from the slits

         L = 2 -0.30

         L = 1.70 m

           

let's calculate

        y = 1.70 tan 35

        y = 1.19 m

3 0
3 years ago
Plz help &gt;:
svlad2 [7]

Answer:

10m

Explanation:

The object distance and image distance is the same from the mirror. so the image is 5m behind the mirror.

5+5=10

5 0
3 years ago
Other questions:
  • PLEASE HELP I WILL GIVE BRAINLIEST  Which substances will make a salt when combined? Vinegar and tea Soda and wine Soda and ammo
    14·2 answers
  • A ball is kicked from the top of a building with a velocity of 50 m/s and lands 165 m away from the base of the building.
    5·1 answer
  • Your answer is incorrect. an empty swimming pool needs to be filled to the top. the pool is shaped like a cylinder with a diamet
    6·1 answer
  • What happens to light when it changes speed?
    15·1 answer
  • Power source that provides a current of 1.6 A to two 5 Ω resistors connected in series is moved to a parallel circuit that consi
    11·2 answers
  • the resistivity of a given wire of cross session area 0.7mm² is 49×10⁴.calcuate the resistance of a 2m lenght of wire​
    14·1 answer
  • What is your mass in kilograms if you weigh 120 pounds
    7·1 answer
  • A total charge of 9.0 mC passes through a cross-sectional area of a nichrome wire in 3.6s. The number of electrons passing throu
    9·1 answer
  • Help again! Thank you all xoxo
    5·1 answer
  • Why does heat flows from hot body to cold body?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!