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vodomira [7]
3 years ago
5

Until 2006, pluto was considered one of the nine planets. now pluto is considered _____.

Physics
2 answers:
chubhunter [2.5K]3 years ago
7 0
The answer is a dwarf planet. Since it isnt a planet it anymore.
Masja [62]3 years ago
6 0
The answer is a dwarf planet.
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Prove that potential energy is equal to kinetic energy​
Greeley [361]
Answer: when an object begins to fall its potential energy decreases and it’s kinetic energy increases, potential energy is equal to kinetic energy because a decrease in potential energy is exactly equal to the increase in kinetic energy.
7 0
3 years ago
What is the acceleration of a 10 kg mass pushed by a 5N force?
ehidna [41]

Answer:

0.5

Explanation:

F = ma

5 = 10 a

a = 5/10

a = 0.5

4 0
3 years ago
13) Each beaker shown to the right contains iron and acid. In which beaker will the iron dissolve the fastest and why? HELP ME A
lakkis [162]

AnsweR

D

Explanation:

beaker B becz of increased surface area

3 0
3 years ago
6. A garden hose attached to a nozzle is used to fill a 15-gal bucket. The inner diameter of the hose is 1.5 cm, and it reduces
Vesna [10]

Answer: 1.135 L/s; 1.35 kg/s, 22.57 m/s

Explanation:

Given

Volume of bucket V=15\ gal\approx 56.78\ L

time to fill it t=50\ s

Volume flow rate

\dot{V}=\dfrac{56.78}{50}=1.135\ L/s\approx 1.135\times 10^{-3}\ m^3/s

The inner diameter of the hose D=1.5\ cm

diameter of the nozzle exit d=0.8\ cm

we can volume flow rate as

\Rightarrow \dot{V}=Av\quad \quad \text{v=average velocity through nozzle exit}\\\\\Rightarrow 1.135\times 10^{-3}=\frac{\pi }{4}d^2\times v\\\\\Rightarrow 1.135\times 10^{-3}=\frac{\pi }{4}(0.8\times 10^{-2})^2\times v\\\\\Rightarrow v=\dfrac{4\times 1.135\times 10^{-3}}{\pi \times 64\times 10^{-6}}=22.57\ m/s

Mass flow rate

\Rightarrow \dot{m}=\rho \times \dot{V}\\\Rightarrow \dot{m}=1\ kg/L\times 1.135\ L/s=1.35\ kg/s

5 0
3 years ago
In the final stages of production, a pharmaceutical is sterilized by heating it from 25 to 75C as it moves at 0.2 m/s through a
steposvetlana [31]

Answer:

The answer is "12682.267\ \ \frac{W}{m^2}"

Explanation:

Calculating the mass flow rate of fluid:

m= \rho AV

   = \rho \frac{\pi}{4} D^2\ V\\\\= 100 \times \frac{\pi}{4} \times (0.0127)^2\times 0.2\\\\=0.0253 \ \frac{kg}{s}\\\\

Calculating the amount of heat transfer.

q =m\timesC_p(T_{m,0}-T_{m,i})

  =0.0253 \times 4000 (75-25)\\\\=0.0253 \times 4000(50)\\\\=0.0253 \times 200,000 \\\\= 5060 \ W

Calculating the required value for heat flux:

q"=\frac{q}{A_s}

   =\frac{q}{\pi DL}\\\\= \frac{5060}{\pi \times 0.0127 \times 10}\\\\= 12682.267 \frac{W}{m^2}\\

3 0
3 years ago
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