Answer:
The second law of a vibrating string states that for a transverse vibration in a stretched string, the frequency is directly proportional to the square root of the string's tension, when the vibrating string's mass per unit length and the vibrating length are kept constant
The law can be expressed mathematically as follows;
The second law of the vibrating string can be verified directly, however, the third law of the vibrating string states that frequency is inversely proportional to the square root of the mass per unit length cannot be directly verified due to the lack of continuous variation in both the frequency, 'f', and the mass, 'm', simultaneously
Therefore, the law is verified indirectly, by rearranging the above equation as follows;
From which it can be shown that the following relation holds with the limits of error in the experiment
m₁·l₁² = m₂·l₂² = m₃·l₃² = m₄·l₄² = m₅·l₅²
Explanation:
Answer:
7 km
Explanation:
53 km in 1 hour/ 60 minutes. .89 km a minute.
Answer:
Explanation:
The recombination rate is denoted by R it is the ratio of excess carrier concentration and life time
The recombination rate R is given by 
We have given excess carrier concentration = 
Life time 
So recombination rate 
Answer: A chemical reaction occurs when some substances change chemically to other substances. Chemical reactions are represented by chemical equations. Consider a simple chemical reaction, the burning of methane. In this reaction, methane (CH4) combines with oxygen (O2) in the air and produces carbon dioxide (CO2) and water vapor (H2O). The reaction is represented by the following chemical equation:
CH4 + 2O2 → CO2 + 2H2O
Explanation: I did research
Answer:
35.71 m
Explanation:
Potential energy is calculated using this formula:
- PE = mgh
- where m = mass (kg). g = gravitational acceleration on Earth (9.8 m/s²), h = height (m)
We are given 3 out of the 4 variables in this problem. We want to solve for h, the height of the cannon ball.
List out the known variables:
- PE = 14,000 J
- m = 40 kg
- g = 9.8 m/s²
- h = ? m
Substitute these values into the potential energy formula.
- 14,000 = (40)(9.8)h
- 14,000 = -392h
- h = 35.7142857143
The cannonball was 35.71 m high to have a potential energy of 14,000 J.
