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zhenek [66]
3 years ago
9

When 24500J of energy is supplied to a 2.0 kg block of aluminum.Its temperature rise from 20oc to 35oc.The block is well insulat

e so that there is no energy loss to the sorrounding Determine specific aluminum
Physics
1 answer:
True [87]3 years ago
5 0

Explanation:

Amount of heat supplied (Q) = 24500 J

Mass (m) = 2 kg

Initial temperature (t1) = 20 ° C

Final temperature (t2) = 35 ° C

Difference in temperature (dt) = t2 - t1 = ( 35 - 20) °C = 15 ° C

Now Specific heat capacity (S) = ?

We know we have the formula;

Q = m * s * dt

24500 = 2 * s * 15

24500 = 30 S

S = 24500 / 30

S = 816.67 J / Kg ° C

The specific heat capacity is 816.67 J/kg°C.

Hope it will help :)

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g The potential energy of a pair of hydrogen atoms separated by a large distance x is given by U(x)=−C6/x6, where C6 is a positi
Arisa [49]

Answer:

F_x = -\frac{6 C_6}{2^7}

Attractive

Explanation:

Data provided in the question

The potential energy of a pair of hydrogen atoms given by \frac{C_6}{X_6}

Based on the given information, the force that one atom exerts on the other is

Potential energy μ = \frac{C_6}{X_6}

Force exerted by one atom upon another

F_x = \frac{\partial U}{\partial X} = \frac{\partial}{\partial X}  (-\frac{C_6}{X^6})

or

F_x = \frac{\partial}{\partial X}  (\frac{C_6}{X^6})

or

F_x = -\frac{6 C_6}{2^7}

As we can see that the C_6 comes in positive and constant which represents that the force is negative that means the force is attractive in nature

5 0
4 years ago
9. Since current is the rate at which charge is flowing, if the current in the circuit decreases, what does that mean about the
TiliK225 [7]

Answer:

Electric current is defined as the rate of flow of electric charge in a circuit from point one point to another. This is carried by electrically charged particles within the circuit. Current is represented by the symbol I and its unit measured in Amperes. It is therefore related to the voltage and resistance of the circuit. If the current in the circuit reduces, the rate at which the charge and current on the capacitor reduces also proportionally in an exponential manner.

Explanation:

Since a decrease in the flow of current in the circuit is observed, the implication for the rate at which the charge and voltage on the capacitor is also an exponential decrease in the rate of flow with time. This is because the electric current is directly proportional to the electric charge and the time.

5 0
3 years ago
Adding or removing thermal energy to or from a substance does not always cause its temperature
julia-pushkina [17]
Change in thermal energy not always cause it's temperature change. It is the situation when water reaches either at 0 C or 100 C then thermal energy doesn't cause change in temperature instead it changes the state of matter.

In short, Your Answer would be "True"

Hope this helps! 
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Answer:

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