Answer:
1.48 kg
Explanation:
The conservation of energy states that energy cannot be created or destroyed but can be converted from one form to another. Hence, in this case, energy lost by the copper should equal to the energy gained by the lead. Hence,
Energy Lost by Copper = Energy Gained by Lead
mcT = <em>mcT </em>(Bolded is for copper, italicised is for lead)
m(387)(88.4 - 55.9) = <em>(3.50)(128)(55.9 - 14.4)</em>
12577.5m = <em>18592</em>
<em> </em><u>m = 1.48 kg (3 sf)</u>
<em>(Note: Thermal energy can be calculated using </em><em>Q = mcT</em><em> where </em><em>m</em><em> is the </em><em>mass</em><em>, </em><em>c</em><em> is the </em><em>specific heat capacity</em><em> and </em><em>T</em><em> is the </em><em>change in temperature</em><em>)</em>
Answer:
its 0 m/s^2 on khan
Explanation:
usually how i think of it if its below 15 N then its 0
