Answer:
All metals have a shiny appearance (at least when freshly polished), are good conductors of heat and electricity; form alloys with other metals; and have at least one basic oxide.
Nonmetals have a dull, coloured or colourless appearance; are brittle when solid; are poor conductors of heat and electricity; and have acidic oxides.
Metalloids are metallic-looking brittle solids that are either semiconductors or exist in semiconducting forms, and have amphoteric or weakly acidic oxides.
Answer:
5) Friction.
Explanation:
The force that provides the necessary centripetal acceleration is the friction. The centripetal acceleration must be horizontal, directed to the center of the circular trajectory. Gravity and normal force are vertical, air resistance is against the speed of the car (not towards the center of the trajectory) and there is no tension in this example.
<em>The gravitational force between two objects is inversely proportional to the square of the distance between the two objects.</em>
The gravitational force between two objects is proportional to the product of the masses of the two objects.
The gravitational force between two objects is proportional to the square of the distance between the two objects. <em> no</em>
The gravitational force between two objects is inversely proportional to the distance between the two objects. <em> no</em>
The gravitational force between two objects is proportional to the distance between the two objects. <em> no</em>
The gravitational force between two objects is inversely proportional to the product of the masses of the two objects. <em> no</em>
Answer:
2.2 cm easily observable
Explanation:
= Mass of 12 C =
= Mass of 13 C =
= Radius of 12 C =
B = Magnetic field
v = Velocity of atom = 8.5 km/s
= Radius of 13 C
The force balance of the system is
The required magnetic field is
Radius is given by
So
The required diameter is
Separation is given by
The distance of separation is 2.2 cm which is easily observable.
Use v^2 = u^2 + 2 a s
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