Check my answers thanks!

1. A diesel automobile outputs ThermE, RadE, ElectE and KinE from an input of
a. NuclE
b. ChemE
c. ElectE
d. KinE

I think its b

Two race cars cross the finish line at exactly the same time but the first car is twice as massive as the second car. How much is the kinetic energy of the first car compared to the second car?

Twice as much, right?

3. A car doubles its speed while driving along the highway. How does the kinetic energy change?

Increases by a factor of two, correct?

4. The temperature increase in Joule's apparatus was proportional to?

nothing at all? correct?

5. What particle was hypothesized to account for missing energy in some nuclear decays (and later discovered)?

The neutron, right?

Corrija! soy un profesor de la física en España.


Three is wrong.
proportional to heat input

The last one can be electron (Beta particle.

1. In order to determine the output of a diesel automobile from a given input, we need to understand the different types of energy involved. The options given are:

a. NuclE (Nuclear Energy)
b. ChemE (Chemical Energy)
c. ElectE (Electrical Energy)
d. KinE (Kinetic Energy)

To answer this question, we need to know that the combustion process in a diesel engine involves the conversion of chemical energy stored in diesel fuel into kinetic energy, which is the energy of motion. Therefore, the correct answer is b. ChemE.

2. You are correct. When two race cars cross the finish line at the same time and the first car is twice as massive as the second car, the kinetic energy of the first car is indeed twice as much as the kinetic energy of the second car. Kinetic energy is directly proportional to mass, so when mass is doubled, kinetic energy also doubles.

3. Your answer is incorrect. When a car doubles its speed while driving along the highway, the kinetic energy does not simply increase by a factor of two. Kinetic energy is proportional to the square of an object's velocity. Therefore, if the speed of the car doubles, the kinetic energy will increase by a factor of four (2^2). So, the correct answer is that the kinetic energy increases by a factor of four.

4. For the fourth question, you mentioned that the temperature increase in Joule's apparatus was proportional to "nothing at all." That is incorrect. The temperature increase in Joule's apparatus is actually proportional to the amount of heat input. Joule's law states that the heat generated is directly proportional to the power input and the amount of time it is applied. Therefore, the correct answer is that the temperature increase in Joule's apparatus is proportional to the heat input.

5. You mentioned that the particle hypothesized to account for missing energy in some nuclear decays (and later discovered) is the neutron. However, the correct answer is the electron, which is also known as a beta particle. Beta decay involves the release of an electron or a positron (antiparticle of an electron) from the nucleus, causing a change in the overall energy balance. The discovery of the electron as the missing energy particle contributed to our understanding of nuclear decay processes.

Espero que estas correcciones sean de ayuda para su enseñanza de la física en España. Si tiene más preguntas o necesita más explicaciones, por favor no dude en preguntar.