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
saveliy_v [14]
2 years ago
5

A machine which has an energy loss of 10% will have efficiency of​

Physics
1 answer:
larisa [96]2 years ago
6 0

Answer:

90%

Explanation:

if you lose 10% of a 100 you get 90

You might be interested in
A wooden cube with the mass of 1kg is placed on a frictionless plane that makes an angle of 30° with the floor.
Anni [7]

Answer:

I dont know

Explanation:

8 0
2 years ago
A spherical asteroid of average density would have a mass of 8.7×1013kg if its radius were 2.0 km. 1. If you and your spacesuit
Law Incorporation [45]

1. 0.16 N

The weight of a man on the surface of asteroid is equal to the gravitational force exerted on the man:

F=G\frac{Mm}{r^2}

where

G is the gravitational constant

M=8.7\cdot 10^{13}kg is the mass of the asteroid

m = 100 kg is the mass of the man

r = 2.0 km = 2000 m is the distance of the man from the centre of the asteroid

Substituting, we find

F=(6.67\cdot 10^{-11}m^3 kg^{-1} s^{-2})\frac{(8.7\cdot 10^{13} kg)(110 kg)}{(2000 m)^2}=0.16 N

2. 1.7 m/s

In order to stay in orbit just above the surface of the asteroid (so, at a distance r=2000 m from its centre), the gravitational force must be equal to the centripetal force

m\frac{v^2}{r}=G\frac{Mm}{r^2}

where v is the minimum speed required to stay in orbit.

Re-arranging the equation and solving for v, we find:

v=\sqrt{\frac{GM}{r}}=\sqrt{\frac{(6.67\cdot 10^{-11} m^3 kg^{-1} s^{-2})(8.7\cdot 10^{13} kg)}{2000 m}}=1.7 m/s

3 0
3 years ago
The light from Star 1 reaches Star 3 in 138 years and Star 2 in 63 years. Which of these conclusions about the stars is correct?
krek1111 [17]

The correct answer is A


6 0
3 years ago
The part of a sound wave in which the particles are most spread out is called a(n)
Nutka1998 [239]
Seismic wave is the answer
7 0
3 years ago
Select the correct answer. Which chemical reaction absorbs energy? A. photosynthesis B. explosion C. current produced by a batte
zavuch27 [327]

Answer:

Explanation:

Photosynthesis

4 0
3 years ago
Read 2 more answers
Other questions:
  • Explain why the surface of Venus is hotter than the surface of Mercury
    7·2 answers
  • Is the ratio between the sine of an angle of incidence to the sine of an angle of refraction is called the refractive index?
    8·2 answers
  • An object at rest requires a force of 15 newtons to set it into motion. This force is greater than which force?
    15·1 answer
  • Which way does the friction arrow go in a free body diagram for a moving object point
    5·2 answers
  • Explain the relationships between gravity, mass, and distance. please write a paragraph
    11·1 answer
  • When a mass of 5 kg hangs from a vertical wire of length 2 m, waves travel on this wire with a speed of 10 m/s. What will the sp
    12·2 answers
  • What are three (3) things you can do before exercise or sports that will keep you safe?
    5·1 answer
  • Suppose the Moon rose at 6 p.m. yesterday. What are the approximate rising times and phase of the Moon today?
    14·1 answer
  • Black holes have three major parts that include:
    6·2 answers
  • A slanted surface used to raise an object is a(n)​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!