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
ki77a [65]
3 years ago
8

Which simple machine is the lid of a jar? a lever a screw an inclined plane a wheel and axle

Physics
2 answers:
natta225 [31]3 years ago
7 0

The answer is a screw.


If you look up screws you can see they work the exact same!

inysia [295]3 years ago
7 0

Answer:

screw just took the test

Explanation:

You might be interested in
The electromagnetic wave that CT scans are based on is called a
kherson [118]
X-ray)
because Electromagnetic waves are in act
6 0
2 years ago
A cat dozes on a stationary merry-go-round, at a radius of 4.4 m from the center of the ride. The operator turns on the ride and
monitta

Answer:

The coefficient of static friction is 0.29

Explanation:

Given that,

Radius of the merry-go-round, r = 4.4 m

The operator turns on the ride and brings it up to its proper turning rate of one complete rotation every 7.7 s.

We need to find the least coefficient of static friction between the cat and the merry-go-round that will allow the cat to stay in place, without sliding. For this the centripetal force is balanced by the frictional force.

\mu mg=\dfrac{mv^2}{r}

v is the speed of cat, v=\dfrac{2\pi r}{t}

\mu=\dfrac{4\pi^2r}{gt^2}\\\\\mu=\dfrac{4\pi^2\times 4.4}{9.8\times (7.7)^2}\\\\\mu=0.29

So, the least coefficient of static friction between the cat and the merry-go-round is 0.29.

4 0
3 years ago
A national college researcher reported that 67%of students who graduated from high school in 2012 enrolled in college. Twenty-ni
dsp73

Answer:

Explanation:

Theorem of Binomial Distribution will apply here.

n = 29 , p = .67 , q = 0.33

mean = np = 29 x .67 = 19.43

Standard Deviation = √npq

= √29 x .67 x .33

= √6.4

= 2.53

=

4 0
3 years ago
A proton is moved so that its electric potential energy increases from 4.0 × 10-14 J to 9.0 × 10-14 J. The magnitude of the char
Kamila [148]

Answer:

B. 3.1 × 10^5 V

Explanation:

8 0
2 years ago
Read 2 more answers
Which of the following color schemes (specifically in jewel tones) is on-trend for 2020?
stiks02 [169]

Answer:

The answer is B complimentary

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • A boy drops a penny down a well. The penny falls for 8 s before splashing into the water. How deep is the well ?
    5·1 answer
  • A 2.5kg metal bar is quenched from 800°C by immersion in a closed insulated tank of water containing 50 litres of water initiall
    6·1 answer
  • Why is it correct to say that the linear electron flow of the light reactions directly captures energy in nadph but only indirec
    5·1 answer
  • The heart rate that indicates your fitness level is the
    6·1 answer
  • An astronaut weighs 8.00 × 102 newtons on the sur- face of Earth. What is the weight of the astronaut 6.37 × 106 meters above th
    6·1 answer
  • What was different about the fire Montag saw after leaving the river?
    7·1 answer
  • What does the stomach acid have in protein digestion
    13·1 answer
  • Why should you never use the coarse adjustment on high power
    9·1 answer
  • A 17-kg sled is being pulled along the horizontal snow-covered ground by a horizontal force of 33 N. Starting from rest, the sle
    14·1 answer
  • Plzzz someone help me!!!!.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!