Answer:
Both particle and wave properties
Explanation:
Light is defined as a particle and a wave, and even as a combination of a particle and a wave. A unit of light is the photon. Higher energy photons behave like particles and low energy photons behave like waves.
Experiments performed with light indicate that light exhibits both particle and wave properties.
The maximum speed is 10.4 m/s
Explanation:
For a body in uniform circular motion, the centripetal acceleration is given by:
where
v is the linear speed
r is the radius of the circular path
In this problem, we have the following data:
- The maximum centripetal acceleration must be
where 
is the acceleration of gravity. Substituting,
- The radius of the turn is
r = 10 m
Therefore, we can re-arrange the equation to solve for v, to find the maximum speed the ride can go at:
Learn more about centripetal acceleration:
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Answer:
245W
Explanation:
Given parameters:
Mass of his body = 50kg
Height of climb = 5m
Time = 10s
Unknown:
Power = ?
Solution:
Power is defined as the rate at which work is done;
Mathematically,
Power = 
Work done = mgh
m is the mass
g is the acceleration due to gravity
h is the height
Work done = 50 x 9.8 x 5 = 2450J
Power = 
= 245W
Answer:
Beat frequency is determined by the number of beats per second one hears from the sound. It can also be determined by taking the difference in frequency of the two notes that interfere to produce the beat.
Explanation:
Beat frequency is determined by the number of beats per second one hears from the sound.
Assuming the sound pulses is coming from two tuning forks;
- Frequency of the first tuning fork (F₁) is known as 240Hz
- Frequency of the second tuning fork (F₂) is not known
- there are 8 beats in 2 seconds
Beat Frequency = number of beats/time
Beat Frequency = 8/2 = 4Hz
Beat Frequency = F₂ - F₁
±4 = F₂ - 240
4 = F₂ - 240
4+240 = F₂
244 = F₂
F₂ = 244 Hz
-4 = F₂ - 240
-4 + 240 = F₂
F₂ = 236 Hz
The percentage uncertainty in the beat frequency is
4 /240 = 0.0167 = 1.67%
To reduce the percentage uncertainty in the beat frequency
A tuning fork of almost the same frequency as the first tuning fork are used to produce sound pulses, let's say the frequency of the second tuning fork is 241 Hz.
The beat frequency = 241Hz -240Hz = I Hz
Then, the percentage uncertainty = 1/240 = 0.00416 =0.416%
Not unless it crushes the container. Work is force acting through a distance. As long as nothing moves, no work is done.
