A metal ball of mass 100 g is heated to 90°C and then cooled to 25°C. The heat lost in the process is 2.5 kJ. Another metal ball
2 answers:
<span>specific heat (
) - the heat required to raise the temperature of the unit mass of a given substance by a given amount (usually one degree)
the equation related to this theory is
</span><span>
Where Q is the energy gained or lost from the system
m is the mass of the object
</span><span>
is the specific heat of the material
is the change in temperature
</span>
the equation related to this theory is
</span><span>
Where Q is the energy gained or lost from the system
m is the mass of the object
</span><span>
</span>
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Answer:
EH = 9.4
Step-by-step explanation:
A rhombus is a quadrilateral with equal length of sides.
Given that, EF = 13 and DF = 18
⇒ DH = HF =
= 9
The property that the diagonals of a rhombus are at right angle to each other.
Thus, applying the Pythagoras theorem, we have;
=
+
=
+
=
+
169 = + 81
= 169 - 81
= 88
EH =
= 9.381
The length EH is 9.4
Answer:
Step-by-step explanation:
Plug in -3 for n in the equation:
Simplify. Remember to follow PEMDAS. First, solve the power:
Next, combine like terms. Note that if there are two negative signs directly next to each other, it becomes a positive sign. Add:
Your answer: