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3 years ago

Why are physicist hard to work a companies that design buildings

Physics

2 answers:

Hunter-Best [27]3 years ago

8 0

Answer:

a career in construction industry is not an option that springs to mind for many physics graduate

meriva3 years ago

3 0

Answer:

buildings involve matter and energy.

Explanation:

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A particle with mass 1.81×10−3 kg and a charge of 1.22×10−8 C has, at a given instant, a velocity v⃗ =(3.00×104m/s)j^. What are

slava [35]

Answer:

The magnitude and direction of the acceleration of the particle is $a= 0.3296\ \hat{k}\ m/s^2$

Explanation:

Given that,

Mass $m = 1.81\times10^{-3}\ kg$

Velocity $v = (3.00\times10^{4}\ m/s)j$

Charge $q = 1.22\times10^{-8}\ C$

Magnetic field $B= (1.63\hat{i}+0.980\hat{j})\ T$

We need to calculate the acceleration of the particle

Formula of the acceleration is defined as

$F = ma=q(v\times B)$

$a =\dfrac{q(v\times B)}{m}$

We need to calculate the value of $v\times B$

$v\times B=(3.00\times10^{4}\ m/s)j\times(1.63\hat{i}+0.980\hat{j})$

$v\times B=4.89\times10^{4}$

Now, put the all values into the acceleration 's formula

$a =\dfrac{1.22\times10^{-8}\times(-4.89\times10^{4}\hat{k})}{1.81\times10^{-3}}$

$a= -0.3296\ \hat{k}\ m/s^2$

Negative sign shows the opposite direction.

Hence, The magnitude and direction of the acceleration of the particle is $a= 0.3296\ \hat{k}\ m/s^2$

7 0

3 years ago

Read 2 more answers

MULTIPLE CHOICE.

choli [55]

When the space shuttle was still in service it operated in orbits with different altitudes. The force of gravity between the Earth and the orbiting shuttle would have been between 85% and 90% of its value on the surface.

5 0

3 years ago

A runner moving through a 1600 m course takes 5 minutes and 25 seconds to go 1230 m. What must his average velocity be for the r

lilavasa [31]

Answer:

3.89 m/s

Explanation:

If we want an average velocity for the whole race of 3.81 m/s in a 1600 m course, the course it must be completed in:

$\frac{1600 \ m}{3.81 \ \frac{m}{s} } = 420 \ s$ .

So, the runner already run for 5 minutes and 25 seconds, this is

$5 \ min *60 \ \frac{s}{min} + 25 \ s = 325 \ s$ .

For finishing the course, the runner has

$420 \ s - 325 \ s = 95 \ s$ .

Now, the distance that the runner has to cover in this time its:

$1600 \ m - 1230 \ m = 370 \ m$

Finally, the runner average velocity for the remainder will be:

$V= \frac{distance \ left}{time \ left} = \frac{370 \ m}{95 \ s} = 3.89 \ \frac{m}{s}$

6 0

4 years ago

How much Tim in minutes will it take a car driving at 90km/hr to travel 27 kilometers

astraxan [27]

Answer:

18min

Explanation:

v=d/t

t=d/v= 27/90 =0.3hrs =18min

6 0

3 years ago

An ac series circuit consists of a voltage source of frequency 60 Hz and voltage amplitude V, a 529-Ω resistor, and a capacitor

Anestetic [448]

Answer:

The amplitude of voltage source will be 662.799 volt

Explanation:

We have given the resistance of the circuit R = 529 ohm

Capacitance $C=9.8\mu F=9.8\times 10^{-6}F$

Frequency f = 60 Hz

Capacitive reactance $X_C=\frac{1}{\omega C}=\frac{1}{2\times 3.14\times 60\times 9.8\times 10^{-6}}=270.80$

Impedance $Z=\sqrt{R^2+X_C^2}=\sqrt{529^2+270.80^2}=594.288$

Power consumed by resistor = 658 W

We know that $P=i^2R$

$658=i^2\times 529$

i = 1.11528 A

We know that voltage = current × impedance = 1.11528×594.288=662.799 volt

6 0

3 years ago