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Sergeeva-Olga [200]
3 years ago
14

If distance of a partical from origin is given

Physics
1 answer:
Alecsey [184]3 years ago
8 0

Answer:

ookokokokokokokokpk

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a light wave travels from air into a medium of refractive index 1.54. If the wavelength of the light in air is 5.4 * 10^-7. calc
kozerog [31]

3.51 × 10^-7m

Explanation:

Refractive index = wavelength of the light in air ÷ wavelength in the medium

wavelength in the medium = wavelength of the light in air ÷ refractive index

= 5.4 * 10^-7 ÷ 1.54

= 3.51 × 10^-7m

3 0
3 years ago
Chris shoots an arrow up into the air. The height of the arrow is given by the function h(t) = - 16t2 + 64t + 23 where t is the
Ghella [55]

Completing the square gives the answer right away.

-16t^2+64t+23=-16(t^2-4t)+23=-16(t^2-4t+4-4)+23=-16((t-2)^2-4)+23

\implies h(t)=-16(t-2)^2+87

which indicates a maximum height of 87 when t=2.

7 0
4 years ago
Read 2 more answers
A current of 0.8 A flows through the motor for 3 minutes. Calculate the total charge in this time.
mixas84 [53]

▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪

The given terms are :

Current = 0.8 Amperes

Time = 3 minutes = 3 × 60 = 180 seconds

we know that,

  • current =  \dfrac{charge}{time}

now, let's solve for charge (q) :

  • 0.8 =  \dfrac{q}{180}

  • q = 180 \times 0.8

  • q = 144 \:

Total Charge (q) = 144 Coulombs

7 0
3 years ago
A mass on the end of a spring undergoes simple harmonic motion. At the instant when the mass is at its maximum displacement from
kaheart [24]

Answer:

zero

Explanation:

In this system, only conservative forces act. Therefore, the mechanical energy, that is, the sum of the kinetic energy and the potential energy, remains constant. When the mass is at its maximum displacement from equilibrium, its potential energy is maximum, therefore, its kinetic energy is minimal, that is to say, that its instantaneous velocity at that point is zero.

6 0
4 years ago
What are transverse waves and longitudinal waves have? how are they similar and different?
4vir4ik [10]
A transverse wave transfers energy perpendicular to the direction of wave motion. a longitudinal wave transfers energy parallel to the direction of the wave
3 0
3 years ago
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