3 years ago

Answer this question

Physics

1 answer:

kow [346]3 years ago

6 0

Answer:

15) C

16) A

17) D

18) D

19) A

22) B

23) D

I might be wrong though

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Please help me......

snow_tiger [21]

A. The statement is true

6 0

3 years ago

How much work was done on a 45 kg weight when lifted 1.4 meters in the air?

BabaBlast [244]

Explanation:

w = f x d

45 x 1.4 = 630j

to get newton's do 45 x gravitation field strength

8 0

2 years ago

Calculate the angle for the third-order maximum of 580-nm wavelength yellow light falling on double slits separated by 0.100 mm.

alekssr [168]

<u>Answer:</u> The angle of diffraction is 0.498°

<u>Explanation:</u>

To calculate the angle of diffraction, we use the equation given by Bragg, which is:

$n\lambda =2d\sin \theta$

where,

n = order of diffraction = 3

$\lambda$ = wavelength of the light = $580nm=5.80\times 10^{-7}m$ (Conversion factor: $1m=10^{9}nm$ )

d = spacing between the crystal planes = 0.100 mm = $1.0\times 10^{-4}$ (Conversion factor: 1 m = 1000 mm)

$\theta$ = angle of diffraction = ?

Putting values in above equation:

$3\times 5.80\times 10^{-7}=2\times 1.00\times 10^{-4}\sin \theta\\\\\sin \theta = 0.0087\\\\\theta=\sin ^{-1} (0.0087)=0.498$

Hence, the angle of diffraction is 0.498°

6 0

3 years ago

A girl pulls on a 10-kg wagon with a constant horizontal force of 30 N. If there are no other horizontal forces, what is the wag

strojnjashka [21]

Force equals mass*distance
F = ma

Given m = 10 kg, F = 30 N

30 = 10a
30/10 = a
3 = a

The wagon's acceleration is 3 m/s^2

7 0

3 years ago

What two units of measure are necessary for describing speed

Shtirlitz [24]

Distance and time, distance because that's how far and time because that's how long

8 0

3 years ago

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