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3 years ago

Hi guys . I'm having some troubles with physics and chemistry .

Physics

1 answer:

Otrada [13]3 years ago

6 0

Answer:

physics and math tutor

Save my exams

Explanation:

hii! for PTM(physics and math tutor) you simply type in the search bar for example in. physics Units and measurements past papers.Then the first option would be PTM(physics and math tutor) and you click on it and it would give you on the left side Revision Notes, flashcards and practice questions. This site has helped me so much and I hope this helps you too (by the way PTM has for all 3 sciences and math too) just simply type the lesson name along with past paper and click on the first link and you'll get yourself your answers!!!! hopefully this helps!:))

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When does gravitational lensing occur? High concentrations of dark matter cause length contraction of nearby objects. The gravit

Stella [2.4K]

Answer:

A massive object (like a galaxy cluster) bends the light from an object (like a quasar) that lies behind it.

Explanation:

A massive object, like a galaxy cluster, is able to deform the space-time shape as a consequence of its own gravity, so the light that it is coming from a source that is behind it in the line of sight will be bend or distorts in a way that will be magnified, making small arcs around the cluster with the image of the background object.

This technique is useful for astronomers since they make research of faraway objects (at hight redshift) that otherwise will difficult to detect with a telescope.

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4 years ago

What type of stress is based on folds

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Life stress is bad on the fold

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4 years ago

Please select the word from the list that best fits the definition Visualizes where items are located

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Answer:I’m pretty sure it’s spatial

Explanation:

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4 years ago

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The wavelength range of colors visible to humans ranges from 350 nm to 750 nm. light that most of us perceive as ________ is at

rodikova [14]

The sentence can be completed as follows:
"<span>The wavelength range of colors visible to humans ranges from 350 nm to 750 nm. light that most of us perceive as red is at 750 nm."

In fact, each different color is associated to a different sub-range of this range of wavelengths. Approximately, they are:
- violet: 350-450 nm
- blue: 450-495 nm
- green: 495-570 nm
- yellow: 570-590 nm
- orange: 590-620 nm
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3 years ago

The dielectric strength of rutile is 6.0 × 106 V/m, which corresponds to the maximum electric field that the dielectric can sust

VLD [36.1K]

Answer:

6.48*10⁻⁷ C

Explanation:

By definition, the capacitance of a capacitor is expressed as follows:

$C =\frac{Q}{V}$

where Q is the charge on one of the plates of the capacitor, and V the potential difference between the plates.
The maximum electric field, the potential difference, and the distance between plates are related by the following expression:

$V = E_{max} * d$

Replacing by the givens, we can find V as follows:

$V = 6.0e6 V/m * 0.00108 m= 6480 V$

Now, we can find the maximum charge Qmax, as follows:

$Q_{max} = C*V = 1e-10F* 6480 V = 6.48e-7 C$

The maximum charge that the capacitor can hold is 6.48*10⁻⁷ C.

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3 years ago

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