Answer
there are strong attractive forces between atoms of liquids with a high viscosity
Explanation:
viscosity:
Viscosity is the state of being sticky and thick . There are strong attractive forces between atoms of liquids with a high viscosity on the other hand in non viscous liquid there are weak attractive forces between atoms of liquids. A semi fluid liquid like jelly is said to be viscous. Viscosity increases with stronger inter molecular forces at normal temperature. Viscosity decreases as temperature increases
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John dalton proposed that all elements and matter is composed of atoms.
Answer:
<em>The magnetic field's direction is towards the north</em>
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Explanation:
The force on a positive charge in a uniform magnetic field is represented by the right hand rule. To determine the direction of the force, place your right hand with your palm up, and your thumb at 90° to the other fingers. If the fingers represent the magnetic field, and the thumb the direction of the positive charge, then the palm will push up in the direction of the force. But a negative charge like an electron pushes in exactly the opposite direction. So if you follow this rule, you will find that the magnetic field points towards the north.
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The frictional force is 15 N
Explanation:
In order to solve this problem, we can apply Newton's second law of motion, which states that the net force acting on an object is equal to the product between its mass and its acceleration:
where
is the net force
m is the mass
a is the acceleration
Here we are just interested in the situation along the horizontal direction. The net force acting on the block is:
where
is the applied force (forward)
is the frictional force (backward)
m = 5 kg is the mass of the block
is the acceleration
Substituting into the equation and solving, we find the frictional force:
Learn more about Newton's second law:
brainly.com/question/3820012
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