Explain String Theory

Physics

1 answer:

Naily [24]3 years ago

7 0

Answer:

String theory is an idea that reality is made up of an infinite amount of vibrating strings which are even smaller than quarks. In other words, it's a theory that states that particle physics are replaced with one-dimensional strings. It also describes how the strings spread out and interact with each other.

Explanation:

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The rate of doing work is called _____. power force energy inertia

balandron [24]

The rate of doing work is called POWER.

Power is also defined as the rate of transfer of energy. It measures the speed of how work is done.

The unit of power is WATT.

Power is computed by dividing WORK DONE by TIME TAKEN.
P = W/t

1 watt:
*power of a machine
*power of an agent that does work at the rate of 1 joule per secon

1000 watt = 1 kilowatt
1000 kilowatt = 1 megawatt

8 0

3 years ago

Read 2 more answers

Two red blood cells each have a mass of 9.0 × 10 − 14 kg and carry a negative charge spread uniformly over their surfaces. The r

Gennadij [26K]

Answer:

321.39 m/s

$1.3772213803 \times 10^{10}\ m/s^2$

Explanation:

m = Mass = $9\times 10^{-14}\ kg$

$q_1$ = Charge = -2.50 pC

$q_2$ = Charge = -3.10 pC

r = Radius = 3.75 μm

$\varepsilon_{0}$ = Vacuum permittivity = $8.85 \times 10^{-12}\ F/m$

We have the relation

$m v^{2} &=\frac{q_{1} q_{2}}{4 \pi \varepsilon_{0} 2 r}$

$v =\sqrt{\frac{q_{1} q_{2}}{4 \pi \varepsilon_{0}(2 r)(m)}}$

$=\sqrt{\frac{\left(-2.50 \times 10^{-12}\right)\left(-3.1 \times 10^{-12}\right)}{4(3.14)\left(8.85 \times 10^{-12}\right)\left(2 \times 3.75 \times 10^{-6}\right)\left(9 \times 10^{-14}\right)}}$

$=321.39\ m/s$

The Speed they need when very far away from each other to get close enough to just touch is 321.39 m/s

We have the relation

$m a=\frac{q_{1} q_{2}}{4 \pi \varepsilon_{0}(2 r)^{2}}$

$a=\frac{q_{1} q_{2}}{4 \pi \varepsilon_{0}(2 r)^{2}(m)}$

$=\frac{\left(-2.50 \times 10^{-12}\right)\left(-3.10 \times 10^{-12}\right)}{4(3.14)\left(8.85 \times 10^{-12}\right)\left(2 \times 3.75 \times 10^{-6}\right)^{2}\left(9 \times 10^{-14}\right)}$