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
Kazeer [188]
3 years ago
6

Sergei uses a lever to lift a heavy rock. He obtains a 2.5m lever and places the fulcrum 0.7m from the rock. What is the ideal m

echanical advantage of Sergei's lever?
Physics
1 answer:
Anit [1.1K]3 years ago
4 0

Answer:

m = 3.57

Explanation:

Given that,

Sergei uses a lever to lift a heavy rock. He obtains a 2.5m lever and places the fulcrum 0.7m from the rock.

We need to find the ideal mechanical advantage of Sergei's lever.

It is equal to the ratio of resistance arm to the effort arm. In terms of length it is given by :

m=\dfrac{d_2}{d_1}\\\\m=\dfrac{2.5}{0.7}\\\\=3.57

So, the ideal mechanical advantage of the lever is 3.57.

You might be interested in
A tetrahedron has an equilateral triangle base with 25.0-cm-long edges and three equilateral triangle sides. The base is paralle
KATRIN_1 [288]

Answer:

electric flux through the three side = 2.35 N m²/C

Explanation:

given,

equilateral triangle of base = 25 cm

electric field strength = 260 N/C

Area of triangle = \dfrac{\sqrt{3}}{4}a^2

                          =  \dfrac{\sqrt{3}}{4} 0.25^2

                          = 0.0271 m³

electric flux = E. A

                   = 260 × 0.0271

                   = 7.046 N m²/C

since, tetrahedron does not enclose any charge so, net flux through tetrahedron is zero.

electric flux through the three side = (electric flux through base)/3

                               = \dfrac{7.046}{3}

electric flux through the three side = 2.35 N m²/C

4 0
3 years ago
The answer to the question: "the number of times the sun will rise in two years " will be measured in _____.
Murrr4er [49]
I think the answer is Ten. Hope i helped 

just asking do you do K-12
3 0
3 years ago
An electric charge in a magnetic field will experience no force if the charge is moving _______ to the field.
BlackZzzverrR [31]

Answer:

Parallel

Explanation:

An electric charge in a magnetic field will experience no force if the charge is moving parallel to the field.

6 0
3 years ago
Read 2 more answers
A body on the surface of a planet with the same radius as Earths weighs 10 times more than it does on Earth. What is the mass of
nadya68 [22]

Answer:

Explanation:

Given

radius of Planet is equal to radius of Earth

r_p=r_e

Weight of body on Planet F_p=mg_p

where m=mass of body

g_p=acceleration\ due\ to\ gravity\ on\ surface\ of\ Planet

Weight of body on earth F_e=mg_e

g_e=acceleration\ due\ to\ gravity\ on\ Earth

acceleration due to gravity is given by

g=\frac{GM}{r^2}

where G=gravitational constant

M=mass of Planet

r=radius of planet

for earth g_e=\frac{GM_e}{r_e^2}

for planet g_p=\frac{GM_p}{r_p^2}

substituting these values in F_e and F_p

F_p=m\times \frac{GM_p}{r_p^2}---1

F_e=m\times \frac{GM_e}{r_e^2}---2

divide 1 and 2

\frac{F_p}{F_e}=\frac{m\times \frac{GM_p}{r_p^2}}{m\times \frac{GM_e}{r_e^2}}

10=\frac{M_p}{M_e}

M_p=10M_e

6 0
3 years ago
What is storage of energy​
Talja [164]

Hey,

Storage of energy is known as potential energy. If you take a spring for example, and you stretch it then you hold it, it has the energy you put into it but it is potential since it's not moving. Of course once you let go of it its potential energy turns into kinetic energy.

There are other examples as well, such as a battery. I decided to use the spring example because it is simpler.

I hope it helped.

I wrote all that^.

3 0
3 years ago
Other questions:
  • A reaction of the form aA h Products is second order with a rate constant of 0.169 L/(mol ∙ s). If the ini- tial concentration o
    5·1 answer
  • Whatcan you say to care our mother earth
    11·2 answers
  • When the drivers pass each other, the driver of the red car is to toss a package of contraband to the other driver. To catch the
    9·1 answer
  • Why would a flat sheet of paper and a wad of paper not fall through the air at the same rate
    6·1 answer
  • how can we calculate acceleration in motion which is not uniform or uniformly accelerated​ please help tell me another formula t
    13·1 answer
  • How do u find the number of electronic
    5·1 answer
  • True or false? a Movable pulley does not provide mechanical advantage.<br><br>False<br><br>True
    14·1 answer
  • Does water exist on Mars? Explain your answer. Why didn't Jupiter become a star during the early.​
    9·1 answer
  • What happens to your breathing rate when you.a) exercise.b) go to sleep
    11·2 answers
  • HELLLP CORRECT ANSWER IS BRAINIEST!!!!!
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!