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bagirrra123 [75]

3 years ago

8

Mechanism of doping in physics

1 answer:

rodikova [14]3 years ago

6 0

A semiconductor is a dopant type mechanism

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Compare the temperature of water as ice begins to form with the temperature of ice as it begins to melt

liubo4ka [24]

They are the same temperature.

If you have 1 gram of ice at zero degrees C, you have to pump 334 joules
of heat energy into it in order to<em> just change it from solid to liquid</em> at the <em>same temperature. </em>

This is one of the highest figures known for any substance, and that's why
a piece of ice does such a good job cooling your drink.

3 0

4 years ago

Answer me fast. Find velocity in Acceleration Time Graph.

Ipatiy [6.2K]

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5 0

3 years ago

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When three people with a total mass of 2.00 x 102 kg step into their 1.200 x 103 kg car, the car’s

Aleksandr-060686 [28]

Answer:

a

$k = 457333.3 N/m$

b

$x_a =0.09\ m$

Explanation:

From the question we are told that

The total mass of three people is $M = 2.00*10^{2} \ kg$

The mass of the car is $m_c = 1.200 *10^{3} \ kg$

The compression of the car spring is $x = 3 \ cm = 0.03 \ m$

Generally the spring constant is mathematically represented as

$k = \frac{F}{x}$

Here F is the force exerted by the mass of three people and that of the car , this is mathematically represented as

=> $F = (M +m_c) *g$

=> $F = ([2.0*10^{2} ]+[ 1.200*10^{3}]) * 9.8$

=> $F = 13720 \ N$

So

$k = \frac{13720}{0.03}$

=> $k = 457333.3 N/m$

Generally if the mass which the car is loaded with is $m = 3.00*10^{2} \ kg$

Then the force experienced by the spring is

=> $F_a = (m +m_c) *g$

=> $F_a = (3.00*10^{3} + 1.200 *10^{3}) * 9.8$

=> $F_a = 41160 \ N$

Generally from the above formula the compression is

$x_a = \frac{F_a}{k}$

=> $x_a = \frac{41160}{457333.3}$

=> $x_a =0.09\ m$

3 0

3 years ago

Block A of mass 2.0 kg is released from rest at the top of a 3.6 m long plane inclined at an angle of 30o, as shown in the figur

Jet001 [13]

Answer:

............................

31kg

4 0

3 years ago

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You accidentally slide a glass of iced tea off a table that is 0.75 m tall. How

Marizza181 [45]

Answer:

B

Explanation:

$s= \frac{1}{2} gt ^{2}$

s=0.75

g=10

3 0

3 years ago

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