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lorasvet [3.4K]

3 years ago

5

A 4.0-μF capacitor that is initially uncharged is connected in series with a 4.0-kΩ resistor and an ideal 17.0-V battery. How mu

ch energy is stored in the capacitor 17 ms after the battery has been connected?

1 answer:

Komok [63]3 years ago

4 0

Answer:

Indian girls

Explanation:

I don't know what do you expect I don't know this

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A revolutionary war cannon, with a mass of 2090 kg, fires a 16.7 kg ball horizontally. The cannonball has a speed of 113 m/s aft

OLEGan [10]

Answer:

0.90291 m/s

0.45055 m/s

Explanation:

$m_1$ = Mass of canon = 2090 kg

$m_2$ = Mass of ball = 16.7 kg

$v_1$ = Velocity of canon

$v_2$ = Velocity of ball = 113 m/s

In this system the momentum is conserved

$m_1v_1=m_2v_2\\\Rightarrow v_1=\dfrac{16.7\times 113}{2090}\\\Rightarrow v_1=0.90291\ m/s$

The velocity of the cannon is 0.90291 m/s

Applying energy conservation

$\dfrac{1}{2}m_1v_1^2+\dfrac{1}{2}m_2v_2^2=\dfrac{1}{2}m_2v^2\\\Rightarrow m_1v_1^2+m_2v_2^2=m_2v^2\\\Rightarrow v_2=\sqrt{\dfrac{m_1v_1^2+m_2v_2^2}{m_2}}\\\Rightarrow v_2=\sqrt{\dfrac{2090\times 0.90291^2+16.7\times 113^2}{16.7}}\\\Rightarrow v_2=113.45055\ m/s$

The ball would travel 113.45055-113 = 0.45055 m/s faster

6 0

4 years ago

When vibrational motion in an object increases, which is a true statement?

Step2247 [10]

When vibrational motion in an object increases, the statement that is true is that the kinetic energy temperature and thermal energy increases. The correct option among all the options that are given in the question is the second option or option "B". I hope the answer comes to your help.

6 0

3 years ago

Assume that the total cholesterol levels for adults are normally distributed with mean cholesterol level of 51.6 mg/dL and stan

Ivahew [28]

Answer:

therefore, the probability that an individual will have a cholesterol level greater than 60 mg/dL.= 0.27

Explanation:

given data

Normal distribution

mean cholesterol level μ= 51.6 mg/dL

Standard deviation σ= 14.3 mg/dL

x= 60 mg/dL

We have to find out P(x>60)

We Know that $P(x>a) =P(Z>(a-\mu)/\sigma)$

therefore, $P(x>60) =P(Z>(60-51.3)/14.3)$

= P(Z>0.61)

= 1 - P(Z<0.61)

= 1 - 0.7291

= 0.27

therefore, the probability that an individual will have a cholesterol level greater than 60 mg/dL.= 0.27

5 0

3 years ago

A lead ball is dropped into a lake from a diving board 5.0 m above the water. After entering the water, it sinks to the bottom w

nirvana33 [79]

Answer:

$|D_{depth} |=19.697m$

Explanation:

To find Depth D of lake we must need to find the time taken to hit the water.So we use equation of simple motion as:

Δx=vit+(1/2)at²

$x_{f}-x_{i}=v_{i}t+(1/2)at^{2}\\ -5.0m=(o)t+(1/2)(-9.8m/s^{2} )t^{2}\\ -4.9t^{2}=-5.0\\ t^{2}=5/4.9\\t=\sqrt{1.02} \\t=1.01s$

As we have find the time taken now we need to find the final velocity vf from below equation as

$v_{f}=v_{i}+at\\v_{f}=0+(-9.8m/s^{2} )(1.01s) \\v_{f}=-9.898m/s$

So the depth of lake is given by:

first we need to find total time as

t=3.0-1.01 =1.99 s

$|D_{depth} |=|vt|\\|D_{depth} |=|(-9.898m/s)(1.99s)|\\|D_{depth} |=19.697m$

6 0

4 years ago

Accommodation of the eye refers to its ability to __________. see on both the brightest days and in the dimmest light see both i

Elena-2011 [213]

Answer:

to adjust from distant to the near objects

Explanation:

The process of accommodation is achieved by changing in the shape and position of the eye ball. Just like adjusting the lens of the camera.

6 0

3 years ago

Read 2 more answers