From Newton's second law:
a = F/mass
Therefore, acceleration of an object rolling a ramp would be:
a = g(sin theta) - friction coefficient (g) (sin theta)
The negative sine is due to the kinetic energy opposing the gravity
We are given that the friction coefficient is zero, the g is a constant = 9.8 m/sec and the acceleration is 2 m/sec^2
Substituting in the equation, we get:
2 = 9.8 sin(theta)
sin (theta) = 0.20408
theta = 11.7757 degrees
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Brainliest answer?
The amount of force needed by the truck to move the boulder is 200 N.
<h3>Force:</h3>
This can be defined as the product of mass and acceleration. The S.I unit of force is Newton or kgm/s²
To calculate the newton's of force a block needs to move, we use the formula below.
Formula:
- W = Fd............. Equation 1
Where:
- W = Work done by the truck
- F = Force applied on the boulder
- d = Distance moved by the boulder
Make F the subject of the equation
- F = W/d................. Equation 2
From the question,
Given:
Substitute these values into equation 2
Hence, the amount of force needed by the truck to move the boulder is 200 N.
Learn more about force here: brainly.com/question/12970081
Answer: The partial pressure of 
if the total pressure of the mixture is 3.9 atm is 0.975 atm
Explanation:
According to Raoult's law, the vapor pressure of a component at a given temperature is equal to the mole fraction of that component multiplied by the vapor pressure of that component in the pure state.
where, x = mole fraction of nitrogen in solution = 0.25
= partial pressure of nitrogen = ?
= Total pressure = 3.9 atm
Putting in the values :
The partial pressure of is 0.975 atm
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