Science

PhysicsQ&A LibraryThe first low of the thermodynamics shows U = Q - W, where U is a changing internal energy of the gas in the system, Q is a heat that the system received, and DW is work done by the system. If 15 kJ of heat flows out of a system and 30 kJ of work is done by the system, then what is the change in internal energy?Question

Asked Oct 13, 2019

4 views

The first low of the thermodynamics shows U = Q - W, where U is a changing internal energy of the gas in the system, Q is a heat that the system received, and DW is work done by the system. If 15 kJ of heat flows out of a system and 30 kJ of work is done by the system, then what is the change in internal energy?

Step 1

**Given:**

Heal flown out of the system = 15 kJ

Work done by the system = 30 kJ

Step 2

Calculating the change in t...

Tagged in

Find answers to questions asked by student like you

Show more Q&A

Q: Hi, The question is in the pic below.

A: Write the expression for terminal voltage of the battery .

Q: can you do part d please

A: Write the expression for potential energy of the system.

Q: The number of electrons excited in an element of band gap 2.12 eV is 2.09x106.Calculate the frequenc...

A: The energy emitted by the photon in the given band gap can be calculated as,

Q: A daredevil is shot out of a cannon at 45.0° to the horizontal with an initial speed of 27.5 m/s. A ...

A: Equation of projectile is given by,

Q: Calculate the force a piano tuner applies to stretch a steel piano wire 8.00 mm, if the wire is orig...

A: The Young’s modulus of the steel wire is equal to the longitudinal stress on the wire divided by the...

Q: A bicyclist starts a timed sprint race as he passes the starting line moving at 6.0 mi/h. His accele...

A: Given:Initial velocity of the bicyclist, u = 6 mi/hAverage velocity at constant acceleration = 21 mi...

Q: Use the fall-time associated with 1.5m to calculate g. What uncertainty would you assign to your cal...

A: The expression of the position as a function of time. Motion is under free fall so consider the acce...

Q: Hi, I have to on a graph vectors that illustrate this problem. Suppose you have to move a heavy crat...

A: Click to see the answer

Q: A toy rocket engine is securely fastened to a large puck that can glide with negligible friction ove...

A: The initial velocity of the puck is 2.00im/s, and the final velocity is (6i+16j)m/s.(a)Write the exp...