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3 years ago

8. At what position does the mass have the greatest acceleration?

Physics

1 answer:

gulaghasi [49]3 years ago

6 0

Answer:

Option (e)

Explanation:

If a mass attached to a spring is stretched and released, it follows a simple harmonic motion.

In simple harmonic motion, velocity of the mass will be maximum, kinetic energy is maximum and acceleration is 0 at equilibrium position (at 0 position).

At position +A, mass will have the minimum kinetic energy, zero velocity and maximum acceleration.

Therefore, Option (e) will be the answer.

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The heat flux for a given wall is in the x-direction and given as q^n = 11 W/m^2, the walls thermal conductivity is 1.7 W/mK and

MrMuchimi

Answer:

$\frac{dT}{dx} = 6.47 ^oC/m$

Also as we can see the equation that heat flux directly depends on the temperature gradient so more is the temperature gradient then more will be the heat flux.

For positive temperature gradient the heat will flow outwards while for negative temperature gradient the heat will flow inwards

Explanation:

As we know that heat flux is given by the formula

$q^n = K\frac{dT}{dx}$

here we know that

K = thermal conductivity

$\frac{dT}{dx}$ = temperature gradient

now we know that

$q^n = 11 W/m^2$

also we know that

K = 1.7 W/mK

now we have

$11 = 1.7 \frac{dT}{dx}$

so temperature gradient is given as

$\frac{dT}{dx} = \frac{11}{1.7} = 6.47 K/m$

also in other unit it will be same

$\frac{dT}{dx} = 6.47 ^oC/m$

Also as we can see the equation that heat flux directly depends on the temperature gradient so more is the temperature gradient then more will be the heat flux.

For positive temperature gradient the heat will flow outwards while for negative temperature gradient the heat will flow inwards

5 0

3 years ago

Why would a person’s self-esteem affect his or her health?

valentinak56 [21]

Answer: C.

because low self-esteem comes from a bad diet, which is bad for a person’s physical and mental/emotional health

8 0

3 years ago

3 + 2 ∙ 4 = 3 + (2 ∙ 4)

Rzqust [24]

Answer:

11 = 11

Explanation:

6 0

3 years ago

Read 2 more answers

If the box is a distance 1.81 m from the rear of the truck when the truck starts, how much time elapses before the box falls off

alexira [117]

If the box is a distance 1.81 m from the rear of the truck when the truck starts, ... Force of Friction = mu_s * Normal Force( M * G) ... The box starts moving! ... Now that the box is moving, the bed of the truck pulls at it with 17.4 ... out how long it will take the box to reach the back of the truck. ... T^2 = 2 * 1.81 / .64

4 0

4 years ago

A single slit is illuminated by light of wavelengths λa and λb, chosen so that the first diffraction minimum of the λa component

agasfer [191]

Answer:

λ_A = 700 nm , m_B = m_a 2

Explanation:

The expression that describes the diffraction phenomenon is

a sin θ = m λ

where a is the width of the slit, lam the wavelength and m an integer that writes the order of diffraction

a) They tell us that now lal_ A m = 1

a sin θ = λ_A

coincidentally_be m = 2

a sin θ = m λ_b

as the two match we can match

λ _A = 2 λ _B

λ_A = 2 350 nm

λ_A = 700 nm

For lam_B

a sin λ_A = m_B λ_B

For lam_A

a sin θ_A = m_ λ_ A

to match they must have the same angle, so we can equal

m_B λ_B = m_A λ_A

m_B = m_A λ_A / λ_B

m_b = m_a 700/350

m_B = m_a 2

8 0

3 years ago