You assumed that the initial temperature of the metal sample was the same as that of the boiling water. If the metal sample was actually at a lower temperature than the boiling water, how would your value for the specific heat be affected?

Q: A copper-constantan thermocouple generates a voltage of 4.75 x 10-3 volts when the temperature of…

A:

Q: A rod is made of two different layers: chromium and copper; as shown in the diagram below. Both…

A: A rod is made of two different layers: chromium and copper; as shown in the diagram below. Both…

Q: What is the percent increase in the energy radiated by a person with a average body temperature of…

A: Given : Normal temperature of person, T1 = 37oC = 273 + 37 = 310 K Temperature rises to, T2 = 40oC =…

Q: On which of the following the molar specific heat capacity of a substance depends? [A] Nature of the…

A: It is experimentally seen that the heat required to raise the temperature of different substance is…

Q: The active element of a certain laser is made of a glass rod 28 cm long and 2.3 cm in diameter.…

A: The formula for volume expansion is given by, Here, Vo, α and ΔT represent the original volume, the…

Q: Substance A has twice the specific heat of substance B. Equal masses of the two substances, at…

A: Part A:

Q: Newton's Law of Cooling states that the rate of decrease of temperature of a body is directly…

A:

Q: . how much heat is released from the air in the process? = ....... (kj / kg)

A:

Q: The sensitivity of a thermocouple is 0.05 mV/K. If the voltage range is from 0-50 mV and the lowest…

A:

Q: Problem 2: When a student mixes 50 mL of 1.0 M HCl and 50 mL of 1.0 M NaOH in a coffee-cup…

A: The chemical reaction for the mixing of HCL and NaOH is given as:   Because the enthalpy change for…

Q: What is the change in enthalpy, in kJ/kg, of oxygen as its temperature changes from 150 to 250°C? Is…

A: Given that,First case :- 150 to 250 degrees Celsius Second case:- -50 to 100 degrees Celsius

Q: The active element of a certain laser is made of a glass rod 28 cm long and 2.21 cm in diameter.…

A: We know that,Volume expansion coefficient, ∆V=γV0∆T      equation 1Where,∆V=Change in Volume…

Q: At a crime scene, the forensic investigator notes that the 6.2-gg lead bullet that was stopped in a…

A: Given: The mass of the lead bullet : m = 6.2 g (6.2 x 10-3 kg). The specific heat of lead: c = 130…

Q: You apply a flame to 2 L of water for a certain time and its temperature rises by 1°C. If you apply…

A:

Q: -g piece of metal at 95°C is dropped into 250 g of water at 17.0°C and heated to 19.4°C. What is the…

A:

Q: Find the solution to the thermal conduction equation u(x,y) when the steady-state temperature…

A:

Q: A 0.005kg lead bullet is traveling at a speed of 200 m/s when it embeds in a wood post. If we assume…

A:

Q: An iron bar is heated. Its length, L, in mm can be modelled by a linear function, L=mT+c where T is…

A: Length of the iron bar can be modelled by a linear function which is given below,…

Q: Tethanol,2 = qethanol = 9Fe = Suppose a second trial is conducted using iron and ethanol as…

A: Given: Mass of iron, mFe=51.56 g Mass of ethanol, methanol=63.87 g Initial temperature of ethanol…

Q: When boiling​ water, a hot plate takes an average of 9 minutes​ [min] and 52 seconds​ [s] to boil…

A: Given:           Temperature = 80°F ; converting the temperature in °C            ⇒80°F = 80 -32…

Q: A fluid called F has the same properties as water but its freezing point is 10degC and its boiling…

A:

Q: A fixed amount of an ideal gas is initially at a temperature of 25 °C. What will the new temperature…

A:

Q: How much should the temperature of a brass rod be increased so as to increase its length by 1%?…

A:

Q: Find the temperature distribution in a substance placed between two parallel plates kept at…

A: Given, A substance is placed between two parallel plates kept at a temperature T1 and T2 The plate…

Q: The below shown graph is drawn from the tabulated values of brass which we measured during the…

A:

Q: Calculate the temperature of the junction if the coefficient of thermal conductivity of Zinc is five…

A: K for zinc = 5 x K for steel

Q: A   lab  technician poured 0.200  kg  water  at  0.00 Celsius into  a  vessel  which  contains…

A: Given : Mass of water = 0.2 kg             Temperature while poured into vessel is T1 = 0∘C   and…

Q: A body at a temperature of 200°F is placed in room at a constant temperature of 10°F. If after 20…

A:

Q: If you have ever been involved in a Slap Bet or had an unfortunate incident of being slapped, you…

A: Given Mass of hand=800g  Mass of effect tissue=120g  Increase in temperature of tissue=2o C Specific…

Q: In the model bridge in the previous video, say the model is made out of copper and it is 1 meter…

A: Given data: The original length is L = 1 m The initial temperature is T= 25 degrees The final…

Q: A 101 gg -gg sample of steam at 100 ∘C is emitted from a volcano. It condenses, cools, and falls as…

A: Given Mass m = 101 g Latent heat of fusion Lf = 334 J/g Latent heat of vaporization Lv = 2260 J/g

Q: A 78.11 gram copper metal is heated to 128°C and dropped into 127.12 gram of water at an initial…

A: We have:-Mass of copper metal, mcu=78.11 gmInitial temperature of copper, Tcu, i=128°CMass of water,…

Q: If a thermocouple is used to measure temperature and gives output as shown in the table: Voltage(mV)…

A: Sensitivity is the ratio of change in output (or response) of the instrument to change in input or…

Q: In an experimental setup similar to the one of your laboratory class, an unknown solid of mass…

A:

Q: If a piece of lead is hammered, it is found to be warmer.Why?

A: Every time a piece of lead is hammered, the kinetic energy of the hammer gets transferred to the…

Q: The below shown graph is drawn from the tabulated values of brass which we measured during the…

A: x1= 6 cm; y1= 45.5 C x2= 6.8 cm; y2= 38 C Difference in temperature (dT)=y2 - y1 =38-45.5…

Q: The temperature change of 1 oF is equivalent to a temperature change of 1 oC. TRUE OR FALSE

A:

Q: The specific heat capacity of water is 4180 J kg-1 0C-1. The statement means that

A: Given :- specific heat capacity of water is 4180 J kg-1 0C-1.