in an isolated system, there is no energy entering or exiting the system, and since work is dependent on the change in energy (W = ΔE) , with no change in energy, there is no work done. the net work done on or by the system must be 0

7 0

3 years ago

Female scientist who came to america to study starts at harvard

krok68 [10]

Is that a question? If it is not what its the question?

7 0

4 years ago

A piece of toast weighing 8 grams is flying through the air at 15

Ket [755]

The kinetic energy of toast is 0.06 J.

Explanation:

Kinetic energy is the way to determine the energy released when an object is in motion. In other times, it can be the energy required to move any object and to make it in motion.

As the mass of the toast is given as 8 g and speed is given as 15 m/s, if we ignore the friction caused by air molecules. Then the kinetic energy is the product of mass and square of velocity.

K.E. = $\frac{1}{2}$ × mass × v²

Kinetic energy = $\frac{1}{2} \times \frac{8}{1000} \times 15$

Since, the weight is given in grams , it needed to be converted into kg.

Kinetic energy = 0.06 J

Thus, the kinetic energy of toast is 0.06 J.

6 0

3 years ago

The law of reflection states that if the angle of incidence is 32 degrees, the angle of reflection is ___ degrees.

shusha [124]

The angle of reflection is equal to angle of incidence so the angle of reflection is also 32°.

6 0

3 years ago