<span>The amount of heat energy needed to increase the temperature of a substance by </span>
<span> is given by:
</span>
<span>
where m is the mass of the substance, Cs is its specific heat capacity and </span>
<span> is the increase in temperature of the substance.
In this problem, we have a certain mass m of gold, with specific heat capacity </span>
<span>, to which we add Q=2825 J of energy. Its temperature increases by </span>
<span>. Therefore, if we re-arrange the previous equation, we can find the mass of the block of gold:
</span>
<span>
So, the correct answer is B.</span>
Answer:
×
Explanation:
Knowing that, the volume of the sphere is given by,
Thus, the fractional change in volume is given by,
×
Pressure at the bottom of the sea is,
Δp =pgh = × × pa.
Knowing that,
Bulk modulus:
Answer = ×
[RevyBreeze]
Answer:
Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement.
<u>please mark as brainly</u>
Answer:
The symbol 'K' is a proportionality constant because it shows the direct relationship between the gas tank volume, v, and the time required, t, to fill.
It is also the constant product of the ratio of the gas tank volume to the time required to fill it.
Answer:C > A > B
Explanation:
Given
Three wires A , B and C with Resistivities and lengths as given
A and L
B and 1.2 L
C and L
we know that resistance is given by
where A=cross-section of wire
It is given that common Potential is applied for three wires
Resistance of A , B and C are
Thermal Energy is given by
for same Potential difference
Thus maximum heat is generated in wire C and minimum in wire B
thus C > A > B