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Anna11 [10]
4 years ago
15

A car of mass 1500kg is towing a trailer if mass 1100kg alonf a level road. The acceleration of the car is 1.30m/s.

Physics
1 answer:
Elza [17]4 years ago
5 0

2600x1.3=>D by estimate

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Nady [450]

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mercury vapour

Explanation:

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3 years ago
The angle θ is slowly increased. Write an expression for the angle at which the block begins to move in terms of μs.
Reika [66]

Answer:

tan \theta = \mu_s

Explanation:

An object is at rest along a slope if the net force acting on it is zero. The equation of the forces along the direction parallel to the slope is:

mg sin \theta - \mu_s R =0 (1)

where

mg sin \theta is the component of the weight parallel to the slope, with m being the mass of the object, g the acceleration of gravity, \theta the angle of the slope

\mu_s R is the frictional force, with \mu_s being the coefficient of friction and R the normal reaction of the incline

The equation of the forces along the direction perpendicular to the slope is

R-mg cos \theta = 0

where

R is the normal reaction

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Solving for R,

R=mg cos \theta

And substituting into (1)

mg sin \theta - \mu_s mg cos \theta = 0

Re-arranging the equation,

sin \theta = \mu_s cos \theta\\\rightarrow tan \theta = \mu_s

This the condition at which the equilibrium holds: when the tangent of the angle becomes larger than the value of \mu_s, the force of friction is no longer able to balance the component of the weight parallel to the slope, and so the object starts sliding down.

4 0
4 years ago
From the mass spectrum of the compound, the molecule was determined to have a molar mass of 907 g/mol. what is its molecular for
Molodets [167]
Please elaborate more on your question so I can help you
3 0
3 years ago
Layla shot a balloon straight up in the air and it is in the air round trip for 6.80 s.
Katena32 [7]

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The best answer would be the second option B) because that is NOT part of the Kinetic Molecular Theory.
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3 years ago
Read 2 more answers
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