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gavmur [86]
2 years ago
8

Which of the following BEST describes an object velocity during free fall?

Physics
1 answer:
Viefleur [7K]2 years ago
3 0
Objects can only go so fast and that speed is called terminal velocity. so the answer is A
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A metal wire has a resistance of 14.00 Ω at a temperature of 25.0°C. If the same wire has a resistance of 14.55 Ω at 90.0°C, wha
aliina [53]

Answer:

13.52 Ω

Explanation:

coefficient of thermal resistance be α

R₀ , R₂₅ , R₉₀ and R₋₃₂ be resistances at 0 , 25 , 90 , and - 32 degree

R₂₅ = R₀ + α x 25

R₉₀ = R₀ + α x 90

R₉₀ - R₂₅ = 65 x α

α = (R₉₀ - R₂₅ )/ 65

= (14.55 - 14) / 65

=   .55 / 65 Ω per °C,

R₂₅ = R₀ + α x 25

14 = R₀ + (.55 / 65 )x 25

=  R₀ + .2115

R₀ = 13.7885 Ω

R₋₃₂ = R₀ - α x 32

= 13.7885 -(  .55 / 65) x 32

=  13.7885 - .27077

= 13.51773 Ω

= 13.52 Ω

7 0
3 years ago
Read 2 more answers
As pressure increased, temperature must ? For water to remain in a gaseous state.
Tasya [4]
As pressure increases, temperature must <span>increase</span> for water to remain in a gaseous state.
7 0
3 years ago
A 49.5 gram super ball traveling at 25.5 m/s bounces off a brick wall and rebounds at 19.5 m/s. a high-speed camera records this
OLga [1]
T = 4.25 ms = 4 x 10⁻³ s, the time for rebound
v₁ = 25.5 m/s, the impacting velocty
v₂ = -19.5 m/s, the rebounding velocity (n the opposite directon)

The change in velocity is
v₂ - v₁ = - (25.5+19.5) = -45 m/s

The acceleration is
a = (-45 m/s)/(4 s) = -11.25 m/s²
The negative sign indicates that the final velocity is opposiye to the impact velocty.

Answer: The magnitude of the acceleration is 11.25 m/s²
8 0
3 years ago
PLEASE PLEASE PLEASE HELP FAST!!!!!!!!!!!!!!!
aleksandr82 [10.1K]

Answer:

I have examined the different parts of blub and I assume the answer is (D)T and U

Hope this helps you

4 0
2 years ago
Can atoms go bad?, not in the reversible way like ionization and isotopes but really malfunction our die.​
Elza [17]

Answer:

atoms cannot go bad

Explanation:

Because they stay alive and get good nutriants

5 0
2 years ago
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