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AlladinOne [14]
3 years ago
10

The magnitudes of the two displacement vectors are _____ and ______

Physics
2 answers:
natka813 [3]3 years ago
7 0

Answer:

salixe and magenictic

Explanation:

lisov135 [29]3 years ago
7 0

Answer:

magnetic and salixe

Explanation:

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Air at 25°C and 5 atm is throttled by a valve to 1 atm. If the valve is adiabatic and the change in kinetic energy is negligible
Vsevolod [243]

Answer:

T_{2} = 25^{\circ}C

Solution:

As per the question:

Temperature, T_{1} = 25^{\circ}C

Pressure, P_{1} = 5 atm[\tex]Now,We know that the process of throttling occurs in adiabatic conditions where no heat is transferred in between the system and the surrounding, i.e., Q = 0Thus no work is done in this process, i.e., W = 0Enthalpy also remains same from one state to the other state, i.e., [tex]\Delta h = 0

Therefore, from the eqn:

Q - W = \Delta h + \Delta KE

We can write:

\Delta h = h_{1} - h_{2} = 0

\Delta h = C_{p}\Delta T

C_{p}(T_{2} - T_{1}) = 0

Thus

T_{1} = T_{2} = 25^{\circ}C

where

T_{2} = Exit temperature

4 0
3 years ago
A boy pulls his 9.0 kg sled, applying a horizontal force of 14.0 N (rightward). The coefficient of friction between the snow and
Mama L [17]

Here is the answer, dud

5 0
3 years ago
Hola puntos gratis !!!!!!!!!!!!!!!!!
mina [271]

Answer:

gracias

Explanation:

7 0
3 years ago
Read 2 more answers
Assume we’re able to travel to your planet and decide to take some fireworks with us to celebrate our journey.
julia-pushkina [17]

Answer:

The horizontal distance covered by the firework will be \frac{1876.8}{g}

Explanation:

Let acceleration due to gravity on the planet be g, initial velocity of the firework be u and angle made with the horizontal be ∅.

writing equation of motion in vertical direction:

v_{y}=u_{y}+(-g) t

u_{y}= u\sin \phi

and v_{y}=0

therefore \frac{u\sin \phi }{g} =t

writing equation of motion in horizontal direction:

s_{x}=u_{x}t

u_{x} = u\cos \phi

therefore the equation becomes s_{x}=\frac{u^{2}   \sin \phi  \cos \phi}{g}

therefore horizontal distance traveled =\frac{u^{2}\sin 2\alpha \phi }{2g}=\frac{1876.8}{g}\frac{m}{s}

5 0
3 years ago
When you look ahead while driving, it is best to:
vodka [1.7K]
I think its [B]
Personally i would say [B] only because If you are looking beyond the car in front of you..... then what if the car in front of you throws on breaks... you would hit them in the butt because you weren't paying attention to the car.
And majority of the time if your looking in the lanes beside you then you are most likely trying to get in that lane.
4 0
3 years ago
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