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aleksandr82 [10.1K]
3 years ago
12

The total mass of the wheelbarrow and the road is 80 kg calculate the weight of the wheelbarrow and the road

Physics
1 answer:
Alja [10]3 years ago
7 0

Answer:

The weight of the wheelbarrow and the road is 784 N and the force required to lift the wheelbarrow is 784 N.

Explanation:

Given that,

The total mass of the wheelbarrow and the road is 80 kg.

The weight of an object is given by :

W = mg

where

g is acceleration due to gravity

So,

W = 80 × 9.8

= 784 N

So, the force required to lift the wheelbarrow is equal to its weight i.e. 784 N.

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Answer:

B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.

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As we know that the small gear completes 24 revolutions in 20 seconds

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B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.

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Answer:

Part a)

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Part b)

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Part c)

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j = 1.27 \times 10^{-3} A/m^2

Explanation:

As we know that angular frequency of rotation is

\omega = 100\pi rad/s

now by basic definition of electric current

Part a)

Rate of charge flow is known as electric current

i = \frac{dq}{dt}

so here we have

i = \frac{Q}{T}

i = Qf

Part b)

here we know that

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Part c)

As we know that current density is current per unit area

So we have

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