(b) On wet concrete.
(c) On ice, assuming that μs = 0.100 , the same as for shoes on ice.
The maximum acceleration of a car moving uphill can be calculated using the formula μs*g*cosθ - g*sinθ where θ is the slope angle, μs is the coefficient of static friction, and g is the acceleration due to gravity. The figures for μs differ depending on the road condition - dry concrete, wet concrete, or ice, substantially affecting the car's acceleration.
The maximum acceleration of a car moving uphill is determined by the force of static friction, which opposes the combined force of the car's weight component down the plane and the force utilized by the driving wheels. The maximum static friction force (F_max) is determined by the coefficient of static friction (μs) multiplied by the normal force (N), which is equivalent to the weight of the car (mg) multiplied by the cosine of the angle (cosθ).
(a) On dry concrete: Since the μs is usually 1.0 on dry concrete and half the weight of the car is supported by the drive wheels, the maximum acceleration can be calculated as μs*g*cosθ - g*sinθ
(b) On wet concrete: The μs is around 0.7 on wet concrete. Substituting this value into the formula would give us the maximum acceleration on a wet surface.
(c) On ice: With a μs value of 0.1 as given, the maximum acceleration on ice can also be calculated using the same formula.
As one can see, the road conditions significantly impact the car's maximum acceleration due to the change in the amount of friction between the tires and road surface.
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The maximum accelerations for the car going up a 4º slope are 9.3 m/s² on dry concrete, 6.4 m/s² on wet concrete, and -0.1 m/s² on ice.
The maximum acceleration of the car up the slope can be calculated using the equation: a = μs * g * cosθ - g * sinθ, where a is the acceleration, μs is the coefficient of static friction, g is the acceleration due to gravity, and θ is the angle with the horizontal.
To solve this problem, we must teach the student to take several factors into account, including the various coefficients of static friction corresponding to different road conditions, namely dry concrete, wet concrete, and ice.
Considering that each scenario has different values of μs, we fill in the equation with the angles and coefficients of static friction. As a rule of thumb, μs for dry concrete is generally taken as 1.0, for wet concrete as 0.7 and for ice (mentioned in the question) as 0.100.
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Answer:
different photonic energies
Elements emit different colors of light based on their electron configurations and the amount of energy released.
Each element has a unique arrangement of electrons in its atoms. When these electrons transition from higher energy levels to lower energy levels, they release energy in the form of light. The color of light emitted depends on the amount of energy released.
For example, sodium emits yellow light because its electrons transition from a higher energy level to a lower energy level, releasing a specific amount of energy corresponding to the yellow part of the visible spectrum.
Other elements, like copper or lithium, emit different colors of light because they have different electron configurations and release energy at different wavelengths.
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the force of friction
the magnetic force from Earth's north pole
the Sun's gravity
B. miners getting trapped underground
C. oil spills that pollute oceans and beaches
O D. pollutants in the groundwater after drilling
Answer:
i think it is A
Explanation