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Dahasolnce [82]
3 years ago
13

I need help on this question

Physics
2 answers:
Bess [88]3 years ago
5 0
The answer is Proton!

The proton is always the one with the plus sign.

The electron is the one with the negative sign.

The neutron is the one with no signs and the one that is close to the proton.
polet [3.4K]3 years ago
5 0
A proton bc of the plus sign
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Suppose the coefficient of static friction between a quarter and the back wall of a rocket car is 0.383. At what minimum rate wo
djverab [1.8K]

Answer:

25.59 m/s²

Explanation:

Using the formula for  the force of static friction:

f_s = \mu_s N --- (1)

where;

f_s = static friction force

\mu_s = coefficient of static friction

N = normal force

Also, recall that:

F = mass × acceleration

Similarly, N = mg

here, due to min. acceleration of the car;

N = ma_{min}

From equation (1)

f_s = \mu_s ma_{min}

However, there is a need to balance the frictional force by using the force due to the car's acceleration between the quarter and the wall of the rocket.

Thus,

F = f_s

mg = \mu_s ma_{min}

a_{min} = \dfrac{mg }{ \mu_s m}

a_{min} = \dfrac{g }{ \mu_s }

where;

\mu_s = 0.383 and g = 9.8 m/s²

a_{min} = \dfrac{9.8 \ m/s^2 }{0.383 }

\mathbf{a_{min}= 25.59 \ m/s^2}

3 0
3 years ago
A girl on a motorbike passes by at a speed of 15 m/sec. her mass is 55 kg what is her kinetic energy
MrRissso [65]
K = m*v^{2}  / 2

K = 50 * 225 / 2

K = 5625 J
5 0
4 years ago
NEED HELP ASAP QUIZ PLEASE
zmey [24]
Blank 1 Thermal energy
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Thermal energy is the total energy of the particles.
Heat is the movement of thermal energy from a substance at a higher temperature to another at a lower temperature
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3 years ago
The sun's electromagnetic radiation is produced by
Hoochie [10]
The Sun emits electromagnetic radiation at many wavelengths across the EM spectrum.
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3 years ago
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Discuss what in particular makes the light bulb a non-ohmic resistor. Specifically, how does temperature affect resistance? Can
bagirrra123 [75]

Answer:

the loss of energy due to the Joule effect is the cause of the non-ohmic characteristic of the bulb

Explanation:

A resistance is formed of some type of metal, in a light bulb it is Tungsten, which for low current is a resistance that complies with the ohm law.

When the value of the current is increased the shock of the electors creates a Joule effect, which heats the metal, these shocks are due to atomic imperfections of the structure, this heating creates a loss of energy of the system that causes the characteristic to be lost linear between the voltage and the current, since the total energy balance must be preserved.

An approximate measure of the energy that is emitted is given by Stefan's law.

In short, the loss of energy due to the Joule effect is the cause of the non-ohmic characteristic of the bulb

8 0
3 years ago
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