An electric motor is used to drive the shaft of a small water pump. During a performance test, the torque on the motor shaft is found to be 8.23Nm when the motor is drawing 716 W of electrical power. What is the rpm of the pump shaft if it has an efficiency of 76%?

Q: In physics, temperature is the average of the moving particles in a substance. Heat Measurement…

A: Correct option is Heat.

Q: What is the energy needed to melt 0.52 kg of gold? (Use: Lf of gold = 63 kJ/kg) Select one: a. 0.64…

A: Required The energy needed to melt gold.

Q: A 25-kg box is attached to two-light ropes and is being pulled in a frictionless, horizontal floor.…

A: Q 1) a) Free body diagram.

Q: What thermodynamic principles does insulation for houses and heat sinks for computer useE Explain

A: Thermodynamics is the science of how heat transfers between objects. It is both an academic science…

Q: Which of the following substances would make the best thermal conductor? а. Wood b. Glass С. Brick…

A: Given substances are - Wood Glass Brick Aluminum Wool

Q: 2. Explain the sign agreement used in thermodynamics! 3. Why is heat not worth (0) in an isothermal…

A: Let us see one by one the two sub parts of the question you have asked.

Q: Glass marbles are made by heating the end of a glass rod until drops of molten glass falls. Explain.

A: ReasonSurface tension

Q: 5 examples of phase change

A: Phase change occurs means the change of state of matters. It is a reversible physical change which…

Q: Constant-volume bomb calorimeter is an of a/an a. shut system b. closed system c. isolated system…

A:

Q: What criteria and constraints are important considerations when designing a thermos

A: Important criteria  : It should be properly insulated using a good insulator so that there is no…

Q: 15. Discuss the zeroth law of thermodynamics and why it is necessary.

A: As per our guidelines, we are supposed to answer only first one question in case of multiple…

Q: Explain difference/distinction between heat and energy?

A:

Q: An ideal gas expands in a process in which its pressure depends on the volume as p= p,ea, where Po…

A:

Q: What defines temperature- translational kinetic energy, rotational kinetic energy, vibrational…

A: Temperature is the measurement of the average translational kinetics energy of an object.

Q: Explain why temperature does not change during a phase change

A:

Q: Which of the following materials is the worse thermal conductor? Styrofoam concrete nitrogen gas…

A:

Q: If two systems are in thermal equilibrium with a third system, then they are in thermal equilibrium…

A: If two systems are in thermal equilibrium with a third system ,then they are in thermal equilibrium…

Q: Decide which physical states are indicated in the following statement.  Choose all that apply.…

A: Solid, liquid, and gas are three states of matter. In our daily life w observe and use these states…

Q: Q1) A super heated steam enters an adiabatic gas turbine at 12 bar and 500 °C and leaves at 400 Kpa…

A: In this question it is given that a superheated steam enters an adiabatic gas turbine at 12 bar and…

Q: Explain why temperature doesn’t change during a phase change.

A: Temperature is a measure of the average kinetic energy of a substance’s particles. To put it another…

Q: pressure from 273 K to 373 K. If 20.0 J of work is done by the gas during this process, what is the…

A: The solution of the question 4 ,is

Q: Demonstrate how a heat pump works to warm an interior space.

A: Heat pump is used to transfer absorbing heat from cold space and releasing it to hot space. Heat…

Q: Zeroth law of thermodynamics gives O a. None of these O b. Thermal equilibrium of objects c.…

A: Solution

Q: Heat is transfer of energy due to -2 difference in a- time O b- volume O c- pressure O d-…

A: Heat energy is the result of the movement of tiny particles called atoms, molecules, or ions in…

Q: The sum of all forms of mechanical energy of molecules in a thermodynamic system called O a.…

A: Answer Internal energy of thermodynamic system is the sum of all mechanical energies of all the…

Q: 5. Hence show that: OU (hvexp(-ßhv)) hv exp(-2ẞhv) =-3Nhv + οβ (1-exp(-ẞhv)) (1-exp(-Bhv)) Hint 1:…

A:

Q: Which of the following substances would make the best thermal conductor? a. Aluminum b.…

A: to choose : The best thermal conductor out of aluminum , wool , glass , wood and brick

Q: If you want to melt an ice cube. Do you need to add or remove energy to it?

A: Introduction :- An ice cube is given and we want to melt it. So we need to tell the for its melting,…

Q: Which defines temperature—translational kinetic energy, rotational kinetic energy, vibrational…

A: Temperature is the measurement of average translational kinetic energy of an object.

Q: How many degrees of freedom are there in a monatomic gas? a) 1 b) 2 c) 3 d) 0

A: To find: No. of the degree of freedom are there in a monoatomic gas

Q: Analysis Questions: 1) Which material would make the BEST insulator? Why? the 2) Why Is a good…

A:

Q: why do we need to study the concepts about heat and temperature

A:

Q: 2. A gas is enclosed in a container fitted with a piston of cross-sectional area 0.175 m2. The…

A: 2) Given, Pressure, P = 6000 Pacross sectional area of the piston, A = 0.175 m2pistion moves inward,…