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Julli [10]
3 years ago
5

HELP ASAP NEED RIGHT ANSWER

Physics
1 answer:
Musya8 [376]3 years ago
8 0
The answer is D. the temperature is lower, so the air inside the tires contracts
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Objects have the same velocity only if they are moving the same speed and in the same direction. objects moving at different spe
EastWind [94]

Answer:

Hey

Yes i think you are correct.

7 0
3 years ago
The specific heat of water in its solid phase (ice) is 2090 J/(kg K), while in the liquid phase (water) its specific heat is 419
oee [108]

Answer:

d. 149 ⁰C.

Explanation:

Given;

mass of the block of ice, m = 2 kg

specific heat capacity of the ice, C = 2090 J/(kgK)

initial temperature of the ice, t₁ = -90 ⁰C

heat added to the ice, H = 1,000,000 J

let the final temperature of the ice = t₂

The final temperature of the ice after adding the heat is calculated as follows;

H = mC_{ice} \Delta t\\\\H = mC_{ice}  (t_2 - t_1)\\\\1,000,000 = 2 \times 2090 \times (t_2 - (-90))\\\\1,000,000 = 4,180(t_2 +90)\\\\1,000,000 = 4,180t_2 + 376,200\\\\1,000,000 - 376,200 = 4,180t_2\\\\623,800 = 4,180 t_2\\\\t_2 = \frac{623,800}{4,180} \\\\t_2 = 149 \ ^0C

Therefore, the new temperature of the water is 149 ⁰C.

4 0
3 years ago
A car stops in 120 m. If it has an acceleration of –5m/s 2 , how long did it take to stop
vova2212 [387]

Answer:

t=240s

Explanation:

Distance=120m

Acceleration=-5m/s^2

v=0

Let u=x m/s

Using equation v^2-u^2=2as:-

0-x=2(-5)(120)

-x=-1200

x=1200m/s

Using now equation v=u+at:-

0=1200+-5t

5t=1200

t=240s

8 0
4 years ago
Describe a situation where an object has a change in velocity but constant speed
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-- the little ball going round and round a spinning roulette wheel

-- a car driving around a curve in the road at a constant speed

-- any Earth satellite in a perfectly circular orbit.
The closest thing to it is a geostationary TV satellite ... they try hard
to make those orbits perfectly circular, and keep correcting them to
stay circular.
8 0
3 years ago
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to what part of the electromagnetic spectrum does the thermal radiation trapped in a greenhouse belong to?​
IgorLugansk [536]

Answer:

Considerando, que al tope de la atmósfera llega un 100% de la radiación solar, de este total, sólo un 25% llega directamente a la superficie de la Tierra y un 25% es dispersado por la atmósfera como radiación difusa hacia la superficie, esto hace que cerca de un 50% de la radiación total incidente llegue a la ...

Explanation:

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3 years ago
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