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3 years ago

15

The motion of a car on a position-time graph is represented with a horizontal line. What does this indicate about the car's moti

on?
A.It's not moving.
B. It's moving at a constant speed.
C. It's moving at a constant velocity.
D. It's speeding up.

2 answers:

Ksenya-84 [330]3 years ago

5 0

Answer: The answer is B

Explanation: It is staying in a steady speed position

kumpel [21]3 years ago

5 0

Answer:B it is going a constant speed

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Protons

Explanation:

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Calcula la energía cinética der un vehículo de 1860kg 1ue se mueve a 50km/h

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Answer:

Kinetic energy of the vehicle is

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Kinetic Energy of the vehicle is given as

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m = 1860 kg

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$v = 50 \times \frac{5}{18}$

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Protein molecules

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4 years ago

In a double slit experiment, the distance between the slits is 0.2 mm and the distance to the screen is 100 cm. What is the phas

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Answer:

The phase difference is $\Delta \phi = 180^o$

Explanation:

From the question we are told that

The distance between the slits is $d = 0.2 \ mm = \frac{0.2}{1000} = 0.2 *10^{-3} \ m$

The distance to the screen is $D = 100 cm = \frac{100}{100} = 1 \ m$

The wavelength is $\lambda = 400nm$

The distance of the wave from the central maximum is $L = 5mm = 5*10^{-3} m$

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$y = d sin \theta$

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$tan \theta = \frac{L}{D}$

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$\theta = tan ^{-1} [\frac{5*10^{-3}}{1}]$

$\theta =0.2865$

Substituting values into the formula for path difference

$y = 0.2 *10^{-3} sin(0.2864)$

$y = 9.997*10^{-7} \ m$

The phase difference is mathematically represented as

$\Delta \phi = \frac{2 \pi }{\lambda } * y$

Substituting values

$\Delta \phi = \frac{2 \pi }{400 *10^{-9} } \ * 9.997*10^{-7}$

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