Weather balloons are filled with only a small amount of helium because the __Volume__. of the balloon will increase as the air pressure decreases at higher altitudes.
The total distance you haved walked should be 2.6 miles
Since, A is a vector. Hence, we can break it into two components (x and y)
Angle made by the velocity vector A with the x-axis = 51.7°
Magnitude of the vector A = 70 m/s
°
m/s
°
m/s
Hence, the option C is correct.
The mass of the box is 8.5 kg.
<h3>What is mass?</h3>
Mass can be defined as the quantity of matter contained in a body.
To calculate the mass of the box, we use the formula
Formula:
- F = mgμ............. Equation 1
Where:
- F = Force
- m = mass of the box
- g = acceleration due to gravity
- μ = coefficient of friction
Make m the subject of the equation
- m = F/gμ..................... Equation 2
From the question,
Given:
- F = 25 N
- g = 9.8 m/s²
- μ = 0.3
Substitute these values into equation 2
- m = 25/(0.3×9.8)
- m = 25/2.94
- m = 8.5 kg
Hence, the mass of the box is 8.5 kg.
Learn more about mass here: brainly.com/question/26150306
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Answer: p = - {1/2} , q = {1/2}
Explanation: The frequency of oscillation of a pendulum is given as
F = 1/2π *√{l/g}
Where √ is square root
l is lenght
g is acceleration due to gravity
But
F = 1/T
Where T is the period of Oscillation
Making T subject of formula we have
T= 1/F
T = 2π√{g/l}
Here the power on l is -[1/2]= p
Also,
Power on g is 1/2 =q
All because of the square root.
