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patriot [66]
3 years ago
11

The initial temperature of a bomb calorimeter is 28.50°

Physics
2 answers:
solniwko [45]3 years ago
8 0
The answer is 5,170 J
DaniilM [7]3 years ago
3 0

Answer:

The answer is 5174400 J.

Explanation:

Here you have to keep in mind the equation to determine the amount of heat  (Q) that one body of mass <em>m </em>can take. The equation is : [tex] Q=mc\Delta T [\tex]

where <em>m</em> is the mass, <em>c</em> is the specific heat and [tex] \Delta T [\tex] the temperature variation. This way: Q=1400kg*3.52J/gºC*(28.5-27.45) ºC=1400000 g*3.52 J/gºC * (28.5-27.45)ºC=5174400J=5174.4 kJ=5.17 MJ.

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kolezko [41]

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3 years ago
Which of the following has the same unit as the moment of force?
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Explanation:

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6 0
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a person dives off the edge of aa cliff 33m above the surface of the sea. assuming that air resistance is negligible, how long d
USPshnik [31]

Answer:

The time is t = 2.595 \  s

The speed is v = 25.43 \ m/s

Explanation:

From the question we are told that

    The height of the cliff is  h =  33 \  m

 Generally from kinematic equation we have that

       h  =  ut + \frac{1}{2} gt^2

before the jump the persons initial velocity is  u =  0 m/s

 So

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=>      t = 2.595 \  s

Generally from kinematic equation

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=>  v= 0 + 9.8 * 2.595

=>  v = 25.43 \ m/s

3 0
3 years ago
A2 kg object moves at a constant 5 m/s across a level surface. Determine its kinetic energy.
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