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4 years ago

7

The wave function of a particle in a one-dimensional box of width L is Ψ(x) = Asin(πx/L). If we know the particle must be somewh

ere in the box, what must be the value of A? Express your answer in terms of L.

1 answer:

Harlamova29_29 [7]4 years ago

7 0

Answer: A = square root (2/L)

Explanation: find the attached file for explanation

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What is the magnetic field strength, in units of microTesla (T), at a distance of 6.3 cm from a long straight wire carrying a cu

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Answer:

$2.1 \mu T$

Explanation:

The magnetic field strength is given by:

$B=\frac{\mu_0 I}{2 \pi r}$

where

$\mu_0$ is the vacuum permeability

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r is the distance from the wire

In this problem,

I = 6.5 A

r = 6.3 cm = 0.063 m

So, the magnetic field strength is

$B=\frac{(1.256\cdot 10^{-7} H/m)(6.5 A)}{2 \pi (0.063 m)}=2.1\cdot 10^{-6} T=2.1 \mu T$

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3 years ago

An air bubble underwater has the same pressure as that of the surrounding water. As the air bubble rises toward the surface (and

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Answer:

D Remains constant

Explanation:

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3 years ago

A cue ball initially moving at 3.4 m/s strikes a stationary eight ball of the same size and mass. After the collision, the cue b

romanna [79]

Answer:

speed of eight ball speed after the collision is 3.27 m/s

Explanation:

given data

initially moving v1i = 3.4 m/s

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angle = θ w.r.t. original line of motion

solution

we assume elastic collision

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and

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(v2f)² = (v1i)² - (v1f)²

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v2f = 3.27 m/s

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3 years ago

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Answer:

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3 years ago

Suppose that a 1000 kg car is traveling at 25 m/s (aprox 55mph). Its brakes can apply a force of 5000N. What is the minimum dist

Brrunno [24]

Assuming the the car is travelling to the right (→):

$R(\rightarrow), F = ma$

$\implies a = \frac{F}{m}$

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The information we know:

$u = 25 \ ms^{-1}$

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3 years ago

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