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Question 11
Which one of the following quantities is a vector quantity?
The earth's pull on your body
A.
The mass of a soccer ball
B
С
The number of people attending a cricket game
D
The age of your lecturer
E Today's weather temperature high
Displacement, weight and acceleration are vector quantities.
Answer from: Quest
i think they are all correct
explanation:
they seem good
Answer from: Quest
a.metals can become magnetic if they have many spinning electrons that create magnetic fields.d.only some metals are attracted by magnets; these metals are called ferromagnetic.
d.wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.
Power can be defined as a. the distance over which work was done. b. how much work can be done in a given time. c. all the work in an given area. d. the energy required to do work.
Chameleons catch insects with their tongues, which they can rapidly extend to great lengths. in a typical strike, the chameleon's tongue accelerates at a remarkable 220 m/s2 for 20 ms, then travels at constant speed for another 30 ms.