A star is born when gas and dust from a nebula become so dense and hot that nuclear fusion starts. Which of the following forces
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The spider will cross the driveway <u>25.71 in seconds</u>.
Why?
It's a conversion problem, so, in order to solve it, we need to convert the units of the given information.
Let's convert the given speed (in cm/s) to m/s.
We know that:
So, converting we have:
Then, calculating the time, we have:
We have that the spider will cross the driveway in 25.71 seconds.
Have a nice day!
The minimum coefficient of static friction between the pavement and the tires is 0.69.
The given parameters;
- <em>radius of the curve, r = 90 m</em>
- <em>angle of inclination, θ = 10.8⁰</em>
- <em>speed of the car, v = 75 km/h = 20.83 m/s</em>
- <em>mass of the car, m = 1100 kg</em>
The normal force on the car is calculated as follows;
The frictional force between the car and the road is calculated as;
The net force on the car is calculated as follows;
Thus, the minimum coefficient of static friction between the pavement and the tires is 0.69.
Learn more here:brainly.com/question/15415163