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2 years ago

A player prefers to make high passes that lift the puck above the ice. Which stick should the

Physics

1 answer:

Arte-miy333 [17]2 years ago

8 0

Answer:

i dont know

Explanation:

hello

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What is the value of the boltzmann constant of 1.7 moles of gas at 290 K that has an average kinetic energy of 1.4 MJ? A. 7x10^-

fredd [130]

Answer:

The value of of the Boltzmann constant is $3.14\times 10^{-23} J/K$ .

Explanation:

Generally the formula for average kinetic energy of a molecule :

$K.E=\frac{3}{2}kT$

where,

k = Boltzmann’s constant

T = temperature = 290 K

Given:

Number of molecules in 1.7 moles:

$1.7\times 6.022\times 10^{23} molecules=1.0237\times 10^{24} molecules$

Average kinetic energy of 1.7 moles = 1.4 MJ = $1.4\times 10^6 J$

Average kinetic energy of 1 molecule = $\frac{1.4\times 10^6 J}{1.023\times 10^{24}} =1.3675\times 10^{-18} J$

$1.3675\times 10^{-18} J=\frac{3}{2}\times k\times (290K)$

$k=3.14\times 10^{-23} J/K$

8 0

3 years ago

A charged isolated metal sphere of diameter 15 cm has a potential of 8500 V relative to V = 0 at infinity. Calculate the energy

Elan Coil [88]

Answer:

$u = 0.057 J/m^3$

Explanation:

Energy density near the surface of the sphere is given by the formula

$u = \frac{1}{2}\epsilon_0 E^2$

also for sphere surface we know that

$E = \frac{V}{R}$

R = radius of sphere

V = potential of the surface

now we have

$u = \frac{1}{2}\epsilon_0 (\frac{V^2}{R^2})$

now from the above formula we have

$u = \frac{1}{2}(8.85 \times 10^{-12})(\frac{8500^2}{0.075^2})$

$u = 0.057 J/m^3$

6 0

3 years ago

Who remebers paper poppers

Tcecarenko [31]

YEAH OMG THEY WERE SO OMG OMG OMG no I acc don’t

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2 years ago

A football is kicked at a velocity of 15m/s at an angle of 25 to the horizontal. Calculate: a) total flight time. b) the maximum

____ [38]

Total time of flight:2usin¢/g if we take g=10m/s²
T=1.2678s
maximum height:u²sin²¢/2g
H=2.009m
range:u²sin2¢/g
R=17.236m

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2 years ago

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emmasim [6.3K]

The difference between A,B,C,D are that the yields go up a with the carbon dioxide for EF and G the temp goes up but not the carbon dioxide

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3 years ago