3 years ago

What is the difference between velocity and vector

Physics

1 answer:

GrogVix [38]3 years ago

5 0

Velocity is the speed of something in a given direction.
Vector is a quantity having direction as well as magnitude

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So the answer is A) 8400 J

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A 234.0 g piece of lead is heated to 86.0oC and then dropped into a calorimeter containing 611.0 g of water that initally is at

Vaselesa [24]

Answer: $24.70 ^{\circ}C$

Explanation:

Given

mass of lead piece $m_l=234 gm\approx 0.234 kg$

mass of water in calorimeter $m_w=611 gm\approx 0.611 kg$

Initial temperature of water $T_w=24^{\circ}C$

Initial temperature of lead piece $T_l=24^{\circ}C$

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Let us take $T ^{\circ}C$ be the final temperature of the system

Conserving energy

heat lost by lead=heat gained by water

$m_lc_l(T_l-T)=m_wc_w(T-T_w)$

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$86-T=\frac{0.611\times 4.184\times 1000}{29.391}(T-24)$

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3 years ago

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7nadin3 [17]

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4 years ago

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