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irinina [24]
3 years ago
11

Joules constant, 4.1868 J/cal, is an equivalence relation for 4.1868 Joules of work for 1 calorie of heat delivered to a substan

ce. A BTU is a British Thermal Unit (another measure of heat). If 1 BTU=252 cal, how many kilojoules equal 6.1 BTU?Express your answer to 4 significant digits and include the proper unit.
Physics
1 answer:
Llana [10]3 years ago
7 0

Answer:

The final answer is 6.1 BTU = 6.5621*103 KJ

Explanation:

1 BTU= 252 cal\\1 BTU =252 × 4.2 kJ\\6.1 BTU = 252 × 6.1×4.2 kJ                = 6562.08 kJ\\                = 6.5621 × 103 kJ\\

Hence, 6.1 BTU = 6.5621 × 103 kJ

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What step does the Rin PRICES stand for? Why is this step important?
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Explanation:

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6 0
3 years ago
An object is made up of three masses connected by massless rods of fixed length. Mass A is located at (30.0 cm, 0 cm) and has a
puteri [66]

Answer:

0.0605 Kg m^2

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8 0
3 years ago
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8 0
3 years ago
Read 2 more answers
A stone is dropped from a tower 100 meters above the ground. The stone falls past ground level and into a well. It hits the wate
ELEN [110]

A useful formula that gives the free-fall distance from rest in 'T' seconds:

                       D = (1/2 G) x (T²)

      G = 9.81 m/s²
1/2 G = 4.905 m/s²

                       D (5 seconds) = (4.905 m/s²) x (5 sec)²

                                              = (4.905 m/s²) x (25 sec²)

                                              =        122.625 meters .

Since the tower-top is 100m above ground,
the depth of the well, to the top of the water,
accounts for the additional  22.625 meters.

My question is:  How do you know exactly when the stone hit the water ?

You probably stood at the top of the well and listened for the
sound of the 'plop'.  But it took some time after the stone hit
the water for the sound of the plop to come back up to you. 
Well, can't you just subtract that time ?  Yes, but you need
to know how much time to subtract.  That depends on the
depth of the well ... which is exactly what you're trying to
determine, so you don't know it yet.

Oh well.  That's a deep subject.
 
7 0
3 years ago
If a spring stores 5 j of energy when its compressed by 0.5 m. what is the spring constant
aliya0001 [1]

The elastic potential energy stored in a spring is given by:

E=\frac{1}{2}kx^2

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3 0
3 years ago
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