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3 years ago

Which of the following will most likely be a sustainable environment?

Physics

2 answers:

Andrei [34K]3 years ago

7 0

Answer:

I think A

Explanation:

rusak2 [61]3 years ago

7 0

C. , i had to do this before :) hope this helps

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An automobile tire having a temperature of −1.5 ◦C (a cold tire on a cold day) is filled to a gauge pressure of 26 lb/in2 . What

Salsk061 [2.6K]

Answer: $32.22\ lb/in^2$

Explanation:

Given

Temperature on the hot day $T_i=-1.5^{\circ} C\approx 271.5\ K$

Gauge Pressure $P_i=26\ lb/in^2$

When Temperature rises to $T_f=40^{\circ}C\approx 313\ K$ on a hot day then

absolute pressure is let say $P_f$

Using ideal gas equation we can write

$\Rightarrow \frac{PV}{T}=constant$

as volume is constant therefore

$\Rightarrow \frac{P}{T}=constant$

$\Rightarrow \frac{26+14.7}{271.5}=\frac{P_f}{313}$

$\Rightarrow P_f=46.92\ lb/in^2$

Gauge Pressure is given by

$\Rightarrow 46.92-14.7=32.22\ lb/in^2$

6 0

3 years ago

Please help me I give good points

Mandarinka [93]

Answer:

B. 1.1 m/s²

<em>good luck, i hope this helps :)</em>

8 0

3 years ago

Define momentum in terms of football.

inna [77]

The law of conservation of momentum basically means that energy is always conserved and never lost when a collision happens.

Using the formula p=mv ...
Player A would have a momentum of 220 N•S
Player B would have a momentum of 0 because he is not moving

After the collision, the total momentum is still 220 N•S because energy is never lost, but now player A is at 0 and player B took his momentum. Think about it this way, if you bumped into something that wasn’t moving, it would fall and you most likely wouldn’t keep moving.

Elastic collisions are where the objects bounce each other and in inelastic collisions they stick together. I don’t watch much football but if you do this should make sense.
If the players fall down together (they tackle each other and fall? I think) it should be inelastic.

Sorry if this was long and confusing but I really hope this helps! ☺️

7 0

3 years ago

A force of 12 N changes the momentum of a toy car from 3kgm/s t0 10kgm/s. Calculate the time the force took to produce this chan

yan [13]

Answer:

Time = 0.58 seconds

Explanation:

Given the following data;

Initial momentum = 3 kgm/s

Final momentum = 10 kgm/s

Force = 12 N

To find the time required for the change in momentum;