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3 years ago

10

A force of 300 N is used to stretch a horizontal spring with a 0.5 kg block attached to it by 0.5 m. The block is released from

rest and undergoes simple harmonic motion. Calculate spring constant, mechanical force applied and velocity when x=15 cm.

1 answer:

morpeh [17]3 years ago

6 0

Answer:

0.7000cm

Explanation:

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Two large thin metal plates are parallel and close to each other. On their inner faces, the plates have excess surface charge of

wariber [46]

Answer:

For left = 0 N/C

For right = 0 N/C

At middle = $-7.6836 * 10^{-11} \vec{i}$ N/C

Explanation:

Given data :-

б = $6.8 * 10^{-22}$ C/ m²

Considering the two thin metal plates to be non conducting sheets of charges.

Electric field is given by

$E = \frac{\sigma }{2\varepsilon }$

1) To the left of the plate

$\vec{E}= (\frac{\sigma }{2\varepsilon })(-\vec{i})+ (\frac{\sigma }{2\varepsilon })(\vec{i})$ = 0 N/C.

2) To the right of them.

$\vec{E}= (\frac{\sigma }{2\varepsilon })(-\vec{i})+ (\frac{\sigma }{2\varepsilon })(\vec{i})$ = 0 N/C.

3) Between them.

$\vec{E}= (\frac{\sigma }{2\varepsilon })(-\vec{i})+ (\frac{\sigma }{2\varepsilon })(-\vec{i})$ = $(\frac{\sigma }{\varepsilon })(-\vec{i})$ = $-\frac{6.8 * 10^{-22} }{8.85 * 10 ^{-12} } \vec{i}$ = $-7.6836 * 10^{-11} \vec{i}$ N/C

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3 years ago

Which amusement park ride utilizes periodic motion?

tatyana61 [14]

Any ride that oscillates back and forth or moves only in a complete circle utilizes periodic motion.

8 0

3 years ago

The efficiency of conversion of glucose to ATP during glycolysis is approximately:

liraira [26]

Answer: approximately 50%

Explanation:

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3 years ago

A. How long (in ns) does it take light to travel 1.0 m in a vacuum?

suter [353]

Answer:

a) 3.33 ns

b) Water distance = 0.75 m

Glass distance = 0.66 m

Diamond distance = 0.41 m

Explanation:

We take the speed of light, c = m/s.

Speed = distance/time

Time = distance/speed

a)

$t=\dfrac{1}{3.0\times10^{8}}=3.33\times10^{-9}$

t = 3.33 ns

b)

Refractive index, n = speed of light in vacuum / speed of light in medium

$n=\dfrac{c}{s}$

$s=\dfrac{c}{n}$

$d=s\times t$

$d=\dfrac{c}{n}\times \dfrac{1}{c}$

$d=\dfrac{1}{n}$

Thus, the distance traveled in the same time is numerically equal to the reciprocal of the refractive index.

For water n = 1.333

d = 1/1.333 = 0.75 m

For glass n = 1.517

d = 0.66 m

For diamond n = 2.417

d = 0.41 m

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3 years ago

________ states that all current entering a branch point in a circuit must exit.

Aliun [14]

Answer:

The current through a branch is also called the branch current. The current supplied by the battery in a parallel circuit splits at one or more branch points. All of the current entering a branch point must exit again. This rule is known as Kirchhoff's current law

Explanation:

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3 years ago