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3 years ago

Fomula of displacementtthelp

Physics

2 answers:

matrenka [14]3 years ago

5 0

Formula for Displacement: D = ΔX = (Xf - Xi)

Usimov [2.4K]3 years ago

4 0

Introduction to the Displacement and Acceleration Equation. This equation relates displacement, original velocity, constant acceleration, and time: It reads: Displacement equals the original velocity multiplied by time plus one half the acceleration multiplied by the square of time.

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A man weighs himself twice in an elevator. When the elevator is at rest, he weighs 824 N; when the elevator starts moving upward

kifflom [539]

Answer: c. 1.3 m/s^2

Explanation:

When he is at rest, is weight can be calculated as:

W = g*m

where:

m = mass of the man

g = gravitational acceleration = 9.8m/s^2

We know that at rest his weight is W = 824N, then we have:

824N = m*9.8m/s^2

824N/(9.8m/s^2) = m = 84.1 kg

Now, when the elevators moves up with an acceleration a, the acceleration that the man inside fells down is g + a.

Then the new weight is calculated as:

W = m*(g + a)

and we know that in this case:

W = 932N

g = 9.8m/s^2

m = 84.1 kg

Then we can find the value of a if we solve:

932N = 84.1kg*(9.8m/s^2 + a)

932N/84.1kg = 11.1 m/s^2 = 9.8m/s^2 + a

11.1 m/s^2 - 9.8m/s^2 = a = 1.3 m/s^2

The correct option is C

3 0

3 years ago

Pllssss answer thiss ... its about the reading of VOLTMETER AND AMMETER

Afina-wow [57]

Answer:

The answer is C 1.8V and 0.38A

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2 years ago

45 grams in kilo grams

Hunter-Best [27]

Answer:

0.045 kg

Explanation:

1000 grams = 1kg

7 0

3 years ago

Read 2 more answers

A diffraction grating contains 15,000 lines/inch. We pass a laser beam through the grating. The wavelength of the laser is 633 n

MatroZZZ [7]

Answer:

Recall the Diffraction grating formula for constructive interference of a light

y = nDλ/w Eqn 1

Where;

w = width of slit = 1/15000in =6.67x10⁻⁵in = 6.67x10⁻⁵ x 0.0254m = 1.69x10⁻⁶m

D = distance to screen

λ = wavelength of light

n = order number = 1

Given

y1 = ? from 1st order max to the central

D = 2.66 m

λ = 633 x 10-9 m

and n = 1

y₁ = 0.994m

Distance (m) from the central maximum (n = 0) is the first-order maximum (n = 1) = 0.994m

Q b. How far (m) from the central maximum (m = 0) is the second-order maximum (m = 2) observed?

w = width of slit = 1/15000in =6.67x10⁻⁵in = 6.67x10⁻⁵ x 0.0254m = 1.69x10⁻⁶m

D = distance to screen

λ = wavelength of light

n = order number = 1

Given

y1 = ? from 1st order max to the central

D = 2.66 m

λ = 633 x 10⁻⁹ m

and n = 2

y₂ = 0.994m

Distance (m) from the central maximum (n = 0) is the first-order maximum (n = 2) =1.99m

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3 years ago

A total electric charge of 4.00 nC is distributed uniformly over the surface of a metal sphere with a radius of 26.0 cm. The pot

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for what we can get from our side then we will see if they are being made in a letter or something which is leading enormous growth in cities with brick and its own way that it will not on the market and its not a good life for us to stay in and 

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2 years ago