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3 years ago

How does mass and material type effect thermal energy transfer

1 answer:

4 0

The mass contributes with the time of thermal energy transfer with respect to the material type but most importantly the material type will determine rate at which the material absorbs the transfer of heat or thermal energy by either three types, conduction, convection and radiation.

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Planets beyond the solar system.On October 15, 2001, a planet was discovered orbiting around the star HD68988. Its orbital dista

Evgesh-ka [11]

Answer:

Part a)

$M = 2.31 \times 10^{30} kg$

Part b)

$M = 1.15 M_s$

Explanation:

Part a)

As we know that the period of revolution of the planet is given by

$T = 2\pi\sqrt{\frac{r^3}{GM}}$

now we know that

$r = 10.5 \times 10^6 km = 1.05 \times 10^{10} m$

T = 6.3 days

$T = 5.44 \times 10^5 s$

now we have

$5.44 \times 10^5 = 2\pi\sqrt{\frac{(1.05\times 10^{10})^3}{(6.67 \times 10^{-11})M}}$

$M = 2.31 \times 10^{30} kg$

Part b)

As we know that mass of sun is given as

$M_s = 2.0 \times 10^{30} kg$

now we have

$\frac{M}{M_s} = \frac{2.31 \times 10^{30}}{2 \times 10^{30}}$

$M = 1.15 M_s$

6 0

4 years ago

(1 point) A frictionless spring with a 3-kg mass can be held stretched 1.6 meters beyond its natural length by a force of 90 new

Nonamiya [84]

Answer:

x(t)=0.337sin((5.929t)

Explanation:

A frictionless spring with a 3-kg mass can be held stretched 1.6 meters beyond its natural length by a force of 90 newtons. If the spring begins at its equilibrium position, but a push gives it an initial velocity of 2 m/sec, find the position of the mass after t seconds.

Solution. Let x(t) denote the position of the mass at time t. Then x satisfies the differential equation

$m \frac{d^{2}x}{dt^{2}} +kx=0$

Definition of parameters

m=mass 3kg

k=force constant

e=extension ,m

ω =angular frequency

k=90/1.6=56.25N/m

ω^2=k/m= 56.25/1.6

ω^2=35.15625

ω=5.929

General solution will be

$x(t)=c1cos(ωt)+c2Sin(ωt)$

$x(t)=c1cos(5.929t)+c2Sin(5.929t)$

differentiating x(t)

dx(t)=-5.929c1sin(5.929t)+5.929c2cos(5.929t)

when x(0)=0, gives c1=0

dx(t0)=2m/s gives c2=0.337

Therefore, the position of the mass after t seconds is

x(t)=0.337sin((5.929t)

6 0

3 years ago

СРОЧНО ПОМОГИТЕ ПОЖАЛУЙСТА!!!!!!!!!!<br>

Deffense [45]

Боже, как это сложно! Ну ладно.

Между прочим это ты сам должен делать, а то не куда не поступишь!

3 0

3 years ago

According to the myth, why did Pandora open the box that the gods told her never to open?

svet-max [94.6K]

Answer:

B. Her curiosity got the best of her

Explanation:

Pandora gave in to her curiosity .

4 0

3 years ago

Read 2 more answers

A student plans an investigation to determine whether an object has a positive charge, a negative charge, or is electrically neu

dangina [55]

Answer:

Hope it helps

Explanation:

The number of electrons that surround the nucleus will determine whether or not an atom is electrically charged or electrically neutral. The amount of charge on a single proton is equal to the amount of charge possessed by a single electron. A proton and an electron have an equal amount but an opposite type of charge. Thus, if an atom contains equal numbers of protons and electrons, the atom is described as being electrically neutral. On the other hand, if an atom has an unequal number of protons and electrons, then the atom is electrically charged (and in fact, is then referred to as an ion rather than an atom). Any particle, whether an atom, molecule or ion, that contains less electrons than protons is said to be positively charged. Conversely, any particle that contains more electrons than protons is said to be negatively charged

3 0

2 years ago