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
ziro4ka [17]
3 years ago
12

A piece of metal has attained a velocity of 107.8 m/sec after fallinf for 10 seconds what is its initial velocity

Physics
1 answer:
soldi70 [24.7K]3 years ago
4 0

Answer:

7.8 m/s

Explanation:

Here object is falling with a gravitational acceleration there  for we can take acceleration = 10 m/ s² and its constant through out the motion there for we can use motion equation

V = U + at

V - Final velocity

U - Initial velocity

a - acceleration

t - time

V=U+at

107.8=U + 10×10

  = 7.8 m/s

You might be interested in
These materials would result in horizontally polarized light.
tatyana61 [14]
The correct answers among all the other choices are D.) reflection from wet asphalt and E.) refraction from a water surface. These materials would result in horizontally polarized light. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help. 
7 0
3 years ago
Assume that the polymer material has a constant refractive index of 1.5. For light of 600nm wavelength at normal incidence, what
yaroslaw [1]

Answer:

Minimum thickness will be 100 nm

Explanation:

We have given refractive index is n = 1.5

Wavelength of the light incidence \lambda= 600 nm

We have to find the smallest thickness of the film so that there will be minimum light reflect

For minimum thickness of non reflecting film

t=\frac{\lambda }{4n} , here t is thickness, \lambda is wavelength and n is refractive index

Putting all values t=\frac{600}{4\times 1.5}=100nm

So minimum thickness will be 100 nm

8 0
3 years ago
Consider the uniform electric field E = (8.0ĵ + 2.0 ) ✕ 103 N/C. What is its electric flux (in N · m2/C) through a circular area
cluponka [151]

Answer:

5.09 x 10⁵ Nm²/C

Explanation:

The electric flux φ through a planar area is defined as the electric field Ε times the component of the area Α perpendicular to the field. i.e

φ = E A

From the question;

E = (8.0j + 2.0k) ✕ 10³ N/C

r = radius of the circular area = 9.0m

A = area of a circle = π r²           [Take π = 3.142]

A = 3.142 x 9² = 254.502m²

Now, since the area lies in the x-y plane, only the z-component of the electric field is responsible for the electric flux through the circular area.

Therefore;

φ = (2.0) x 10³ x 254.502

φ = 5.09 x 10⁵ Nm²/C

The electric flux is 5.09 x 10⁵ Nm²/C

4 0
3 years ago
¿Por qué es importante tu carrera en la sociedad? Menciona un mínimo de tres argumentos para sustentar tu respuesta y su aporte
agasfer [191]

Answer:

La carrera es importante para ganarse la vida, el respeto en la sociedad y cumplir el sueño.

Explanation:

La carrera es importante por las siguientes razones principales

a) Es una forma de ganar para alimentarse a sí mismo y a su familia y asegurar su futuro.

b) Permite ser considerado como una persona respetable en la sociedad.

c) Es importante ya que también brinda la oportunidad de cumplir el sueño.

3 0
3 years ago
1 jWhat is the correct unit for temperature? <br>​
Nadya [2.5K]

Answer:

Answer: Kelvin ________________

8 0
3 years ago
Other questions:
  • Click on the boxes below to indicate the number of electrons or protons in each labeled position for a zinc atom (z=30, a=65). P
    13·1 answer
  • What travels on a wave
    11·1 answer
  • How is the control group and experimental group different
    8·1 answer
  • Utility poles are to be set every 30 meters. How many poles will be set in one mile if one was set at the beginning of the mile)
    11·2 answers
  • A fixed particle with charge –8.8 nC and a second particle with charge –4.3 nC, respectively, are initially separated by a dista
    11·1 answer
  • A plumber heats a plastic pipe, softens it, shapes it, and then lets it cool. After it is hardened, the
    12·1 answer
  • How do I get number of atoms?
    5·1 answer
  • Describe the formation of the land, the atmosphere, and the oceans of earth
    10·1 answer
  • write at least 5 sentences answering the question, "How does the height of a ramp affect the speed of an object rolling down tha
    11·1 answer
  • Ahmed fills a basket with shopping weighing 10 kg. How much work is being done on the shopping basket when he lifts it verticall
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!