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3 years ago

3. A body moves along a semicircular path. The ratio of distance to displacement is

Physics

1 answer:

stiks02 [169]3 years ago

3 0

Answer:

Ratio of distance to displacement is pi/2

Explanation:

Pls see attached file for diagram and explanation

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What is the effect of load resistor on ripple factor

Zolol [24]

<span>ripple factor can be reduced by increasing the value of the load resistor (which means reducing the load of the circuit)</span>

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3 years ago

Space debris left from old satellites and their launchers is becoming a hazard to other satellites. (a) Calculate the speed of a

Pie

Answer:

Part a)

$v = 7407.1 m/s$

Part b)

$v_{rel} = 1.05 \times 10^4 m/s$

Explanation:

Part a)

As we know that orbital velocity at certain height from the surface of Earth is given as

$v = \sqrt{\frac{GM}{R+h}}$

here we know that

$M = 5.98 \times 10^{24} kg$

$R = 6.37 \times 10^6 m$

$h = 900 km = 9.0 \times 10^5 m$

now we have

$v = \sqrt{\frac{(6.67 \times 10^{-11})(5.98 \times 10^{24})}{6.37 \times 10^6 + 9.0 \times 10^5}}$

$v = 7407.1 m/s$

Part b)

When a loose rivet is moving in same orbit but at 90 degree with the previous orbit path then in that case the relative speed of the rivet with respect to the satellite is given as

$v_{rel} = \sqrt{2} v$

$v_{rel} = 1.05 \times 10^4 m/s$

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3 years ago

The german inventor of the movable-type printing press was

marusya05 [52]

Answer:

The German inventor of the movable-type printing press was Johannes Gutenberg.

Explanation:

Johannes Gutenberg, the inventor of the mechanical movable type printing press introduced printing to Europe and started the Printing Revolution.
In movable type technology of printing, the system used movable components to reproduce a document on the medium, usually paper. The advantages of this type of printing over woodblock printing were that the printing was quicker, the metal type pieces were more durable and the uniform lettering leads to typography and fonts.
The metal movable-type printing press created by Johannes Gutenberg had the type pieces made from an alloy of lead, tin, and antimony. The casting of type pieces was done on matrix and hand molds. He created the first printed version of the Bible called the Gutenberg Bible using this printing technology.
The movable-type printing press helped in the development of the Renaissance and the scientific revolution by the transmission of knowledge and laid the foundation of the modern knowledge-based economy.

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3 years ago

Strontium chloride, SrCl2<br> Is ionic or covalent

Cloud [144]

Answer:

it is a ionic bond because electrons are transferred from chlorine to strontium

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3 years ago

Read 2 more answers

A train travels 53 kilometers in 1 hours and then 81 kilometers in 3 hours what is its average speed?

vekshin1

(53+81)/4 hours = 33.5km/h

4 0

3 years ago