Have a universal record base. Everyone is able to understand the data compiled since the same measurement systems are being used around the world. This is just to simplify all of the information.
Answer:A uniform ladder of mass and length leans at an angle against a frictionless wall .If the coefficient of static friction between the ladder and the ground is , determine a formula for the minimum angle at which the ladder will not slip.
Explanation:A uniform ladder of mass and length leans at an angle against a frictionless wall .If the coefficient of static friction between the ladder and the ground is , determine a formula for the minimum angle at which the ladder will not slip.
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Answer:
The crate's coefficient of kinetic friction on the floor is 0.23.
Explanation:
Given that,
Mass of the crate, m = 300 kg
One worker pushes forward on the crate with a force of 390 N while the other pulls in the same direction with a force of 320 N using a rope connected to the crate.
The crate slides with a constant speed. It means that the net force acting on it is 0. Net force acting on it is given by :

So, the crate's coefficient of kinetic friction on the floor is 0.23.
We need to find the time it takes an electron to move in the given circuit.
The time taken for electrons to reach the starting motor from the battery is 60.65 minutes.
I = Current = 134 A
= Avogadro's number = 
A = Area = 
L = Length = 92.2 cm
= Density of copper = 
M = Molar mass of copper = 63.5 g/mol
= Number of valence electrons of copper = 1
e = Charge of electron = 
Number of charge carriers per unit volume is given by

Time taken is given by

The time taken for electrons to reach the starting motor from the battery is 60.65 minutes.
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