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Physics

1 answer:

Mashutka [201]3 years ago

3 0

Answer:

Brownian motion and diffusion

Explanation:

Brownian motion: taking into consideration, SMOKE. when a burning fire is kindled, smoke is seen to move in the way or direction that is not straight but keep changing continuously ( in haphazard manner). Haphazard manner of smoke is an evidence that matter are made of molecules and are constantly in motion

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Digital thermometers often make use of thermistors, a type of resistor with resistance that varies with temperature more than st

Nezavi [6.7K]

Answer:

The temperature coefficient of resistivity for a linear thermistor is $1.38\times10^{-3}^{\circ}C^{-1}$

Explanation:

Given that,

Initial temperature = 0.00°C

Resistance = 75.0 Ω

Final temperature = 525°C

Resistance = 275 Ω

We need to calculate the temperature coefficient of resistivity for a linear thermistor

Using formula for a linear thermistor

$R=R_{0}(1+\alpha\Delta T)$

$R=R_{0}+R_{0}\alpha\Delta T$

$\alpha=\dfrac{R-R_{0}}{R_{0}\Delta T}$

Put the value into the formula

$\alpha=\dfrac{275-75}{275\times(525-0)}$

$\alpha=1.38\times10^{-3}^{\circ}C^{-1}$

Hence, The temperature coefficient of resistivity for a linear thermistor is $1.38\times10^{-3}^{\circ}C^{-1}$

4 0

3 years ago

Read 2 more answers

1. A soccer player kicks a soccer ball towards the goal. If she kicks it with a velocity of 24 m/s at an angle of 31 degrees abo

ruslelena [56]

Answer:

The ball will go as high as 8.46 m

Explanation:

Projectile Motion

It's the type of motion that experiences an object launched at a certain height above the ground and moves along a curved path exclusively under the action of gravity.

Being vo the initial speed of the object, θ the initial launch angle, and g the acceleration of gravity, then the maximum height hm can be calculated as follows:

$\displaystyle h_m=\frac{v_o^2\cdot \sin^2\theta}{2g}$