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mariarad [96]
3 years ago
12

In order to get unlimited answers without buying brainly plus you should.....

Physics
1 answer:
Papessa [141]3 years ago
5 0

Answer:

What I do is answer a question every few weeks or so and I just get a bunch of answers until it starts making me watch videos again.

Explanation:

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What happens to wave length as a wave leaves the air and enters the Perspex
Pavel [41]
Hey There!

The angle of incidence increases and the angle of refraction increases.

Thank You!
6 0
3 years ago
A point charge Q moves on the x-axis in the positive direction with a speed of 290 m/s. A point P is on the y-axis at y = +60 mm
aliina [53]

Answer:

Explanation:

Magnetic field due to a moving charge

B = μ₀ / 4π x (qv x r)/r²

Given

B = .3 X 10⁻⁶ T,

r = 60 x 10⁻³ m

Putting these values in the given equation

.3 x 10⁻⁶ = 10⁻⁷ x qvsinθ /( 60 x 10⁻³)²

θ = 90 °

qv = 10.8 x 10⁻³

At point P

Sinθ  = 60 / 72

r² = 72 x 72 x 10⁻⁶

B = \frac{10^{-7}\times108\times10^{-4}\times60}{72\times72\times72\times10^{-6}}

= 0.17 μT

8 0
4 years ago
How much force is needed to accelerate a 3kg book in 15m/s
kotegsom [21]
F=M×A
F=3 ×15
F=45N
so the force is 45 N
7 0
3 years ago
A transverse traveling wave on a cord is represented by, where D and x are in meters and t is in seconds.
yarga [219]

Answer with Explanation:

We are given that a transverse travelling wave on a cord is represented by

D=0.51sin(6.1x+76t)

Where D and x in meters

t(in seconds)

a.General equation of transverse wave

y=Asin(kx+\omega t)

By comparing we get

A=0.51

k=6.1

k=\frac{2\pi}{\lambda}

Wavelength,\lambda=\frac{2\pi}{k}=\frac{2\pi}{6.1}=1.03

b.\omega=76

Frequency,f=\frac{\omega}{2\pi}=\frac{76}{2\pi}=12.096Hz

c.Velocity,v=f\lambda=12.096\times 1.03=12.46m/s

Direction:Towards negative x- axis

d.Amplitude,A=0.51 m

e.Maximum speed,v_{max}=A\omega=0.51\times 76=38.76 m/s

Minimum speed,v_{min}=0

6 0
4 years ago
A small object is attached to a horizontal spring and set in simple harmonic motion with amplitude A and period T. How long does
Lunna [17]

Answer:

1.5T

Explanation:

Since, the amplitude of SHM is A. So, in one time period T the object will travel travel a distance of 4A.

6A-4A= 2A.

Now, this 2A distance must be traveled in T/2 time period.

So, the total time taken to travel a distance of 6A is T+T/2 = 3T/2 = 1.5T

6 0
3 years ago
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