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
Katyanochek1 [597]
3 years ago
8

A book with a mass of 3.3 kg sits on a bookshelf. If it has a gravitational

Physics
1 answer:
erma4kov [3.2K]3 years ago
4 0
<h2><u>AnswEr :</u> </h2>

Given that,

  • Mass of the Book (M) = 3.3 Kg

  • Gravitational Potential Energy (P) = 57 J

  • Acceleration Due to Gravity (g) = 9.8 m/s²

We have to find the height of the shelf

We know that,

\tt P = MgH

Putting the values,

\sf \: 57 = 3.3 \times 9.8 \times h \\  \\  \implies \:  \sf \: 57 = 32.34 \times h \\  \\  \implies \:  \sf \: h = 1.76 \: m \: (approx)

<h3>The height of the shelf is 1.76 m </h3>
You might be interested in
Electric circuits and electric current
lidiya [134]

an electric current is a flow of electric charge in electric circuits this is carried by moving electrons in a wire and an electric circuit is an electrical network of electrical components and model of interconnection consisting electrical elements

6 0
3 years ago
Camille knows that range of motion is very important. She is designing a weekly exercise program and is not sure where flexibili
klemol [59]

The best activity for her to do to improve her range of motion is flexibility.

<h3>What are a few range of motion illustrations?</h3>

The term the range of motion (ROM) describes the extent to which a joint or muscle may be moved or stretched. Everybody has a distinct experience. For instance, whereas some people can perform a complete split, others cannot because their joints are stiff and their muscles are unable to extend as far.

<h3>What restricts motion range?</h3>

A joint is said to have a restricted range of motion when it cannot move easily and completely in its typical position. A mechanical issue within the joint, swollen tissues around the joint, or pain may restrict motion.

To knoiw more about range of motion visit:

brainly.com/question/13403291

#SPJ1

7 0
1 year ago
What is the impulse of a 3 kg object that starts from rest and moves to 20 m/s?
IrinaK [193]

Answer:

The impulse on the object is 60Ns.

Explanation:

Impulse is defined as the product of the force applied on an object and the time at which it acts. It is also the change in the momentum of a body.

F = m a

F = m(\frac{v_{2}  - v_{1} }{t})

⇒     Ft = m(v_{2} - v_{1})

where: F is the dorce on the object, t is the time at which it acts, m is the mass of the object, v_{1} is its initialvelocity and v_{2} is the final velocity of the object.

Therefore,

impulse = Ft = m(v_{2} - v_{1})

From the question, m = 3kg, v_{1} = 0m/s and v_{2} = 20m/s.

So that,

Impulse = 3 (20 - 0)

             = 3(20)

             = 60Ns

The impulse on the object is 60Ns.

8 0
2 years ago
Three joggers are running along straight lines as follows: Jogger A, with a mass of 55.2kg, is traveling along the line y=6.00m
frutty [35]

Answer:

L = - 1361.591 k Kgm/s

Explanation:

Given

mA = 55.2 Kg

vA = 3.45 m/s

rA = 6.00 m

mB = 62.4 Kg

vB = 4.23 m/s

rB = 3.00 m

mC = 72.1 Kg

vC = 4.75 m/s

rC = - 5.00 m

then we apply the equation

L =  (mv x r)

⇒  LA = mA*vA x rA = 55.2 *(3.45 i)x(6 j) = (1142.64 k) Kgm/s

⇒  LB = mB*vB x rB = 62.4 *(4.23 j)x(3 i) = (- 791.856 k) Kgm/s

⇒  LC = mC*vC x rC = 72.1 *(- 4.75 j)x(- 5 i) = (- 1712.375 k) Kgm/s

Finally, the total counterclockwise angular momentum of the three joggers about the origin is

L = LA + LB + LC = (1142.64 - 791.856 -1712.375) k  Kgm/s

L = - 1361.591 k Kgm/s

7 0
3 years ago
Describe how sound waves move through different types of matter. Compare the speed at which sound moves through solids, liquids,
Andru [333]
Sound waves need different media in order to travel. This travels by the movement of the atom transferred to another up to its destination. The speed of sound is greatest in solids since the molecules of solid are closely packed together, followed by liquid and they are slowest in gases. 
7 0
3 years ago
Other questions:
  • the ratio of kinetic energy to the potential energy of a certain object of mass m at a height of 40 m above ground level is 2:1.
    13·1 answer
  • Guys help...A spring that obeys Hooke's law, with a spring constant k1, is cut into N identical springs, each with a spring cons
    5·1 answer
  • Calculate the volume of this regular solid,
    11·1 answer
  • A plane can fly at 385mph in still air. If it can fly 220 miles downwind in the same amount of time it can fly upwind at 165 mil
    6·1 answer
  • Birdman is flying horizontally at a
    8·1 answer
  • Define work What is the unit for work? For Physics, thanks.
    5·1 answer
  • suppose the pilot starting again from rest opens the throttle part.way at constant acceleration the airboat then covers a distan
    12·1 answer
  • You are walking on a moving walkway in the airport. The length of the walkway is 59.1 m. If your velocity relative to the walkwa
    14·1 answer
  • Which would most likely form a homogenous mixture?
    9·1 answer
  • Two metal disks are welded together and are mounted on a frictionless axis through their common centers. One disk has a radius R
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!