Trial Test - Year 10 Science

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Which of these is true for centripetal force?

5 points

It is a net force

It always acts towards the center

It always acts away from the center

It is equal to mv/r

It is equal to mass x centripetal acceleration

It acts in the opposite direction of centrifugal force

Which of the following is true for Gravitational force?

5 points

Weight is fixed for a given object but its mass changes with location

Weight is the measure of matter in a body

Gravitational acceleration on moon is 9.81 m/s^2

Acceleration due to gravity decreases as we move away from the surface of a planet

Only cosmic objects have gravitational fields

It is inversely proportional to the distance between 2 objects

Which of the following is not true for torque

5 points

Torque can be defined as a turning force

It is measured in Nm

A longer lever is capable of exerting lesser torque on a nut

Trucks have lesser torque than race cars

Torque is the force x perpendicular distance

It is directly proportional to the diameter of the object on which torque is being exerted

_________ occurs in the core of stars while nuclear submarines use ______

5 points

Fusion Fission

Fission, Radioactive Decay

Fission Fusion

Formation of neutrons, Fission

Clear selection

A person applies 20 N force on a block at 30 degrees to the vertical axis. What is the horizontal component of this force?

5 points

5 N

20 N

10 N

40 N

Clear selection

When Sodium Chloride combines with Magnesium Sulphide following products are formed

5 points

Na2S

NaCl

MgS

MgCl2

How did you find the test? [No marks, compulsory]

0 points

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Easiest test I have done

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