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
ycow [4]
3 years ago
6

Why can concave mirror is used in cosmetic mirror​

Physics
1 answer:
tatuchka [14]3 years ago
4 0

Answer:

"When face is placed between the concave mirror and its focus, it produces a magnified image. This enlarged image of face is helpful in makeup as even pores of skin are clearly visible."

You might be interested in
5. What happens to the inductor current as time passes? 6. What happened to the inductor current when the supply voltage was tri
lawyer [7]

Answer:

i ran out of time

Explanation:

6 0
3 years ago
HELP PLEASE<br><br> answer choices: W X Y Z
Gala2k [10]
I believe it would be x because you are trying to find the width of the wave but i could be wrong 
6 0
3 years ago
A toy car having mass m = 1.50 kg collides inelastically with a toy train of mass M = 3.60 kg. Before the collision, the toy tra
baherus [9]

Answer:

  v_{f} = 3,126 m / s

Explanation:

In a crash exercise the moment is conserved, for this a system formed by all the bodies before and after the crash is defined, so that the forces involved have been internalized.

the car has a mass of m = 1.50 kg a speed of v1 = 4.758 m / s and the mass of the train is M = 3.60 kg and its speed v2 = 2.45 m / s

Before the crash

    p₀ = m v₁₀ + M v₂₀

After the inelastic shock

    p_{f}= m v_{1f} + M v_{2f}

    p₀ =  p_{f}

    m v₀ + M v₂₀ = m v_{1f}  + M v_{2f}

We cleared the end of the train

     M v_{2f} = m (v₁₀ - v1f) + M v₂₀

Let's calculate

     3.60 v2f = 1.50 (2.15-4.75) + 3.60 2.45

     v_{2f}  = (-3.9 + 8.82) /3.60

      v_{2f}  = 1.36 m / s

As we can see, this speed is lower than the speed of the car, so the two bodies are joined

set speed must be

      m v₁₀ + M v₂₀ = (m + M) v_{f}

      v_{f}  = (m v₁₀ + M v₂₀) / (m + M)

      v_{f}  = (1.50 4.75 + 3.60 2.45) /(1.50 + 3.60)

      v_{f} = 3,126 m / s

4 0
3 years ago
Please help
garri49 [273]

Answer:

Exerxingtransforms the chemical energy in the food you eat into Kinetic Energy.

Therefore, the answer is A. Kinetic Energy

4 0
3 years ago
A viscous liquid of constant density 500 kg/m3 and viscosity 10 Pa s falls down with constant velocity due to gravity in a long
Alekssandra [29.7K]

Answer:

\tau=2452.5 N/m^2

Explanation:

given:

density \rho=500kg/m^3

viscosity \mu= 10 Pa-s

diameter of tube= 2 m

and L be length

since gravity is the only force shear force will balance it

so we can write

mg= \tau\times A

A=  \rho\times\frac{\pi}{4} d^2\times L

m=  \rho\times\frac{\pi}{4} d^2\times L

therefore

\rho\times\frac{\pi}{4} d^2\times Lg= \tau\times{\pi} d\times L

putting values we get

\ 500\times\frac{\pi}{4} 2^2\times g= \tau\times{\pi}\times 2

calculating we get \tau=2452.5 N/m^2

6 0
3 years ago
Other questions:
  • Choose the word from the drop-down menu that completes each sentence. A/An star system is made of two stars. A/An star system is
    15·2 answers
  • An archerfish, peering from just below the water surface, sees a grasshopper standing on a tree branch that's just above the wat
    9·1 answer
  • HELP!
    15·2 answers
  • If you have a 1.0 m aqueous solution of NaCl, by how much will it increase the water’s boiling point, if KB = 0.512 °C/m? In oth
    7·1 answer
  • A large rocket has a mass of 2.00×10⁶ kg at takeoff, and its engines produce a thrust of 3.50×10⁷ N. Find its initial accelerati
    14·1 answer
  • Which other subatomic particle has the same mass as a neutron
    7·2 answers
  • Which lighting source has lower energy costs and a longer life but can be dangerous?
    14·1 answer
  • Planet 1 orbits Star 1 and Planet 2 orbits Star 2 in circular orbits of the same radius. However, the orbital period of Planet 1
    14·1 answer
  • A centrifuge used in DNA extraction spins at a maximum rate of 7000rpm producing a "g-force" on the sample that is 6000 times th
    10·1 answer
  • Determine the speed at which the medicine leaves the needle
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!