When skier is moving along the hill we can say that he had some speed by which he is moving down
so his kinetic energy is given as
also the height of the person is also there from ground level
so his potential energy is given as
so here the correct answer would be
<em>The skier has potential and kinetic energy. </em>
Answer
given,
Speed of car A = 95 Km/h
= 95 x 0.278 = 26.41 m/s
Speed of Car B = 121 Km/h
= 121 x 0.278 = 33.64 m/s
Distance between Car A and B at t=0 = 41 Km
a) Distance travel by car B
d = 26.41 t + 41000
speed of the car A = 33.64 m/s
distance = s x t
26.41 t + 41000 = 33.64 x t
7.23 t = 41000
t = 5670.82 s
time taken by Car B to cross Car A is equal to t = 5670.82 s
distance traveled by car A
D = s x t = 26.41 x 5670.82 = 149766.25 m = 149.76 Km
b) distance travel by the car B in 30 s after overtaking car A
D' = s x t = 33.64 x 30 = 1009.2 m = 1 Km
Explanation:
It is known that formula for energy in the 1st exited state is as follows.
E =
And, for 1st exited state n = 2.
So, E =
= -3.4eV
It is given that energy added E' = 2.86 eV.
So, energy of the electron in nth state is as follows.
E" = E + E'
= -0.54 eV
we know E" =
-0.54 eV =
n' = 5
i.e., the electron exited from n = 1 to n = 5.
Thus, we can conclude that the quantum number n of the state into which the electron moves is from n = 1 to n = 5.
Answer:
We can solve this by analyzing the choices and the relations between variables.
Notice that Kinetic Energy depends on the speed and the mass. Actually the Kinetic Energy is directly proportional to those variables, which means the more mass or the more speed, the more Kinetic Energy would be.
Having said that, Part I and Part II must have speed and mass as independent variable, because Kinetic Energy depends on them.
Then, in the third question, the answer is Kinetic Energy because that's the dependent variable in both cases Part I and Part II.
Just to remember, the Kinetic Energy is defined as
Where you can notice the relation between mass, speed and kinetic energy.
Therefore, the right answer are Mass (Part I), Speed (Part II) and Kinetic Energy (Part III).
Explanation: