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2 years ago

2 decimeters expressed in millimeters

Physics

1 answer:

Alenkinab [10]2 years ago

3 0

Hi!
1 decimeter = 100 millimeters.
Therefore 2 decimeters = 200 millimeters.

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Answer:

1. 75N

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Explanation:

1. Work = Force x Distance

we are given that Work = 1,500J and Distance = 20m

hence,

Work = Force x Distance

1,500 = Force x 20

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we are given that mass = 165 kg and change in height = 42m

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PART A)

Conductivity of insulator is very small as there is no free electrons to conduct the current trough that medium

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PART B)

Resistance is the property of a conducting medium which will oppose the flow of current trough it

Resistance of wire directly depends on its length so resistance of long wire will be more than the resistance of short wire

Resistance inversely depends on the area so if a wire has more crossectional area then its resistance must be small

PART C)

power of light bulb is defined as rate of electrical energy

it is given by formula

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2 years ago

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a projectile is shot horizontally from the edge of a cliff, 230m above the ground. the projectile lands 300m from base of the cl

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Answer:

The time taken by the projectile to hit the ground is 6.85 sec.

Explanation:

Given that,

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Distance = 300 m

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Using second equation of motion

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u = initial vertical velocity

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