All categories

3 years ago

Derive the dimension of coefficient of linear expansivity

2 answers:

5 0

Q1. A metal rod is of length 64.576 cm at a temperature 90°C whereas the same metal rod has a length of 64.522 cm at a temperature 12°C. Calculate the coefficient of linear expansion.

Reil [10]3 years ago

3 0

Answer:

The SI unit of coefficient of linear expansion can be expressed as °C-1 or °K-1. ... The dimension of coefficient of linear expansion will be M0L0T0K−1.

You might be interested in

2. What is the momentum of a football of mass 500g traveling at a

Mama L [17]

Answer:

5000 ns

Explanation:

hope this helps

5 0

3 years ago

A disk rotates around an axis through its center that is perpendicular to the plane of the disk. The disk has a line drawn on it

natka813 [3]

Answer:

$t = \frac{\sqrt{\omega0^2+2*\theta*\alpha} -\omega0}{\alpha}$

Explanation:

The rotated angle is given by:

$\theta=\omega0*t+1/2*\alpha*t^2$

Since this is a quadratic equation it can be solved using:

$x=\frac{-b \± \sqrt{b^2-4*a*c} }{2*a}$

Rewriting our equation:

$1/2*\alpha*t^2+\omega0*t-\theta=0$

$t = \frac{\±\sqrt{\omega0^2+2*\theta*\alpha} -\omega0}{\alpha}$

Since $\sqrt{\omega0^2+2*\theta*\alpha} >\omega0$ we discard the negative solution.

$t = \frac{\sqrt{\omega0^2+2*\theta*\alpha} -\omega0}{\alpha}$

8 0

3 years ago

What is the speed of an electron traveling 32 cm in 2 ns?

abruzzese [7]

Answer:

Speed, $v=1.6\times 10^8\ m/s$

Explanation:

Given that,

Distance covered by the electron, d = 32 cm = 0.32 m

Time, t = 2 ns

We need to find the speed of an electron. Speed is equal to distance covered divided by time. So,

$v=\dfrac{0.32}{2\times 10^{-9}}\\\\v=1.6\times 10^8\ m/s$

So, the speed of the electron is $1.6\times 10^8\ m/s$ .

6 0

3 years ago

How is energy transferred when the<br>torch is switched on?

Gemiola [76]

“When the circuit is switched on, chemical (stored) energy in the battery is changed into electrical energy in wires and then into light and heat energy by bulb”

6 0

3 years ago

What is the final speed of a car that accelerate from rest at 5m/s2 for 15 s?

Jlenok [28]

Answer:

75 m/s is the right answer

3 0

3 years ago

Read 2 more answers