Answer:
Coal is a nonrenewable energy source.
Explanation:
To go the maximum distance the shell must be fired at an angle of 45 degrees, which means its initial horizontal and vertical velocities are equal; call it v_1. From y=y_0 +v_1 t - (1/2)gt^2 you can set up an equation for the time the shell is aloft. Then use that expression for time in the equation for horizontal motion: x = x_0+v_1 t = 41Km and solve for v_1. Don;t forget that the initial velocity is the vector sum of the initial vertical and horizontal velocity components.
<span>Once you have the answer to (a), (b) should be straight forward.</span>
The economy is to define it according to primary, secondary and tertiary sectors.
Primary
Sectors<span><span /></span><span><span>Mining and Quarrying </span></span><span /><span><span /></span><span><span>
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Agriculture, Forestry and Fishing
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Secondary Sectors
Manufacturing
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Electricity, Gas and Water (utilities)
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Construction
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Tertiary Sectors
Finance, insurance, real estate and business services
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General Government
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Wholesale, retail, and motor trade; catering and accommodation
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Transport and communicationsHope it helps
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