Answer:
ΔT = 1.22*10^-3 °C
Explanation:
First, you calculate the potential energy of the bird when it is at 35 m high. The potential energy is also the mechanical energy of the bird in this case.
m: mass of the bird = 0.75kg
g: gravitational constant = 9.8m/s^2
h: height = 35m
All this energy is given to the water. You use the following formula in order to calculate the change in temperature:
m: mass of the water = 50kg
c: specific heat of water = 4186 J/kg°C
Q is equal to U (potential energy of the bird) because the bird gives all its energy to water. By doing ΔT the subject of the formula you obtain:
hence, the maximum rise in temperature is 0.00122 °C
Answer:
--------------------------------
Explanation:
Answer;
B. both a non-directional and directional hypothesis
Explanation;
A two-tailed test is the standard test of significance to determine if there is a relationship between variables in either direction. Two-tailed tests do this by dividing the .05 in two and putting half on each side of the bell curve.
A non-directional hypothesis is a type of alternative hypothesis used in statistical significance testing. In contrast, a directional alternative hypothesis specifies the direction of the tested relationship, stating that one variable is predicted to be larger or smaller than null value, but not both.
Answer:
Explanation:
= Refractive index of bubble = 1.33
f = Frequency of light = 
c = Speed of light = 
The wavelength of light is given by
Wavelength is also given by
m = 1 for minimum thickness
The minimum thickness is
Answer:
The smallest value is n= 2
Explanation:
The balmer equation is given below
1/λ = R(1/4 - 1/n₂²).
R= 1.0973731568508 × 10^7 m^-1
λ= 400*10^-9 m
(400*10^-9)= 1.0973731568508 × 10^7 (1/4-1/n²)
(400*10^-9)/1.0973731568508 × 10^7
= 1/4 - 1/n²
364.51 *10^-16= 1/4 - 1/n²
1/n²= 1/4 -364.51 *10^-16
1/n² = 0.25-3.6451*10^-14
1/0.25= n²
4= n²
√4= n
2= n
The smallest value is N= 2
