D) It isn't accelerating
This is because if both sides are pushing with the exact same force, than one force is not overpowering the other, therefor the wheelbarrow would not be moving.
Answer:
Look at this picture hopefully it helps
Answer:
Explanation:
The formula to be used here is that of the general gas law which is below
P₁V₁/T₁ = P₂V₂/T₂
where P₁ is the initial pressure (and can be represented as 1 atm)
V₁ is the initial volume (and can be represented as 1 cm³)
T₁ is the initial temperature (and can be represented as 1 °C = 274K)
P₂ is the final pressure (and would be 10 atm since the pressure increased 10 times)
T₂ is the final temperature (and would be 0.07°C = 273.07K since the temperature decreased 14 times; 1/14 = 0.07)
V₂ is the final volume which is unknown
Using the formula stated earlier
1 × 1/274 = 10 × V₂/273.07
1 × 1 × 273.07 = 10 × V₂ × 274
V₂ = 273.07/2740
V₂ = 0.099 ⇔ 0.1
Thus V₁:V₂ is 1:0.1
This means the volume of gas reduced 10 times (1/10) the original volume
Answer:
125 V
Explanation:
Given,
Power ( P ) = 500 W
Current ( I ) = 4 A
To fine : -
Potential difference ( V ) = ?
Formula : -
P = V I
V = P / I
= 500 / 4
V = 125 V
Therefore,
the potential difference across the ends of the heating element is 125 V.
Answer:
494.45 m.
Explanation:
Echo: This is the sound heard after the reflection of sound wave in a plain surface.
v = 2x/t................................ Equation 1
Where v = velocity of sound in air, x = distance between the mountain and the hikers, t = time to hear the echo.
making x the subject of the equation,
x = vt/2........................... Equation 2
Given: v = 341 m/s, t = 2.9 s.
Substitute into equation 2
x = 341(2.9)/2
x = 494.45 m.
Hence the mountain is 494.45 m far away
