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
Mashutka [201]
3 years ago
12

8. A rectangle is measured to be 6.4 +0.2 cm by 8.3 $0.2 cm.

Physics
1 answer:
mamaluj [8]3 years ago
5 0

Answer:

a) The perimeter of the rectangle is 29.4 centimeters.

b) The uncertainty in its perimeter is 0.8 centimeters.

Explanation:

a) From Geometry we remember that the perimeter of the rectangle (p), measured in centimeters, is represented by the following formula:

p = 2\cdot (w+l) (1)

Where:

w - Width, measured in centimeters.

l - Length, measured in centimeters.

If we know that w = 6.4\,cm and l = 8.3\,cm, then the perimeter of the rectangle is:

p = 2\cdot (6.4\,cm+8.3\,cm)

p = 29.4\,cm

The perimeter of the rectangle is 29.4 centimeters.

b) The uncertainty of the perimeter (\Delta p), measured in centimeters, is estimated by differences. That is:

\Delta p = 2\cdot (\Delta w + \Delta l)  (2)

Where:

\Delta w - Uncertainty in width, measured in centimeters.

\Delta l - Uncertainty in length, measured in centimeters.

If we know that \Delta w = 0.2\,cm and \Delta l = 0.2\,cm, then the uncertainty in perimeter is:

\Delta p = 2\cdot (0.2\,cm+0.2\,cm)

\Delta p = 0.8\,cm

The uncertainty in its perimeter is 0.8 centimeters.

You might be interested in
Use the principle of superposition (Equation 1.3) to predict the electric field at the point 0.5 meters to the right and 1.5 met
kvasek [131]

Answer:

Explanation:

The x component of electric field Ex = k Q / R²

= 9 x 10⁹ x 5 x 10⁻⁹ / .5²

= 180 N .

The y component of electric field Ey = k Q / R²

The y component of electric field Ey

= 9 x 10⁹ x 5 x 10⁻⁹ / 1.5²

= 20 N

Total field = \sqrt{180^2+20^2}

= 181.1 N .

Angle with x axis = Tanθ = Ey / Ex = 20 / 180 = .111

= 6.33⁰

4 0
3 years ago
A child is bored in the back of the car and starts to time how long the car takes to pass some 100m markers on the side of the r
Delvig [45]

Answer:

Follow my insatagram onlypiccolo for answer

Explanation:

ok?

4 0
2 years ago
are the two sources in phase or out of phase? explain how you can tell from the diagram. if the two sources are out of phase, gi
pychu [463]

If two sources emit waves with the same wavelength and a constant phase difference ϕ, they are said to be coherent.

<h3>What is coherent source ?</h3>
  • If the frequency and waveform of two wave sources are the same, they are coherent. Waves' optimal quality of coherence makes stationary interference possible.
  • When the phase difference between two beams of light is constant, they are coherent; if the phase difference is random or changes, they are noncoherent.
  • The concept of a superpositioning at the core of quantum physics and quantum computing is referred to as "quantum coherence." Quantum coherence specifically considers a scenario in which a wave property of an item is split in two and the two waves coherently interfere with one another.
  • The interference visibility, which examines the size of the interference fringes in relation to the input waves, is an easy way to measure the degree of coherence; correlation functions provide a precise mathematical definition of the degree of coherence.

To learn more about coherent refer :

brainly.com/question/24768967

#SPJ4

4 0
1 year ago
What is the frequency of radiation whose wavelength is 11.5 a0 ?
irakobra [83]

Answer:

The frequency of radiation is 2.61 \times 10^{17} s^{-1}

Explanation:

Given:

Wavelength \lambda = 11.5 \times 10^{-10} m

Speed of light c = 3 \times 10^{8} \frac{m}{s}

For finding the frequency of radiation,

  c = f \lambda

  f = \frac{c}{\lambda}

  f = \frac{3 \times 10^{8} }{11.5 \times 10^{-10} }

  f = 2.61 \times 10^{17} s^{-1}

Therefore, the frequency of radiation is 2.61 \times 10^{17} s^{-1}

4 0
3 years ago
What is the displacement of a spring if it has a spring constant of 10 N/m, and a force of 2.5 N is applied?
pochemuha
O.25 m is the displacement
5 0
3 years ago
Read 2 more answers
Other questions:
  • Answer for brainliest and mad points pllllssssssss
    7·1 answer
  • How do you find Net Force?
    15·2 answers
  • An fm radio station broadcasts at a frequency of 101.3 mhz. what is the wavelength?
    12·2 answers
  • A 12.3 n force is applied to a 3.65 kg object. Determine the acceleration of the object​
    13·1 answer
  • A newly discovered planet has a radius twice as large as earth's and a mass five times as large. What is the free-fall accelerat
    7·1 answer
  • The force of gravity acting upon an object is the objects mass. True or false
    6·1 answer
  • ¿Cuál es la diferencia entre un trauma físico y un trauma psicológico?
    12·1 answer
  • What formula can you use to calculate average speed
    10·1 answer
  • The voltage between two points in a circuit is 4.2 V. If the resistance between
    11·2 answers
  • Two girls are estimating each other's power. One runs up some step
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!