1)In a particular Bohr orbit for an electron in a He+TOTAL

 ion, the  energy is -54.4 eV. What is the kinetic and potential energy for the electron in this orbit?

What is the ionization energy to completely remove the electron from this orbit?

2)The orbital quantum number for the electron in a hydrogen atom is l = 6. What is the smallest possible value for the total energy of this electron?

3) A heat engine having an efficiency of 0.20 takes in 2000 J of energy

from the hot reservoir in one cycle. In the same time, how much work will it perform?

4) An 80 kg man decides to go skydiving. When approaching the ground it maintains a speed of 5 m / s. When it hits the ground, it slows down steadily for a distance of 1m. What is the force that the Earth exerts on the parachutist during the slowdown? What is the value of the slowdown?

5) 1)A sports car with a given speed v has a stopping distance of 38m on dry road. Knowing that μs = 0.85 for the dry road and μs = 0.2 for the ice, what is the stopping distance of the same car at the same speed v on ice?

6) 1) 

A woman pulls a rope that holds a 40 kg sled. If μk = 0.6 between the sled and the ice, and the angle of the rope and the path is 30?, what force must the woman exert in order for the sled to move at a constant speed?

7) On a table there are two objects: One made of aluminum and one made

of wood. You touch them with your hands. Select the correct statement.
Group of answer choices
a)The aluminum object is colder than the wood object by few degrees Celsius.
b)The wood is a better insulator than aluminum and it "steals" less rapidly the heat flow from the hand.
c)The wood is a material that stays warmer than the aluminum at room temperature.
d)The aluminum is a better insulator than wood and it "steals" less rapidly the heat flow
from the hand.

8) We have all, at some point in our lives, engaged in, or refused to

participate in, deviant behavior. Discuss a time when you did, or didn't, participate in deviant behavior. How did you feel about the behavior afterwards? Were you "caught" or "labeled" for the behavior? What sociological theory of deviance do you think best explains your behavior at the time?

9) A woman pulls a rope that holds a 40 kg sled. If μk = 0.6

between the sled and the ice, and the angle of the rope and the path is 30?, what force must the woman exert in order for the sled to move at a constant speed?

10) Use Gauss's law to determine if the electric field inside a parallel

plate capacitor is stronger closer to the charged plates.

11) 1) Why is the electric potential and the electric potential energy

similar to the electric field and the coulomb force?


2) What is the advantage to using the electric potential in electrostatics versus the electric field?