Answer:
The mass of a tennis ball is 59 grams.
Explanation:
Given that the formula for momentum is p = m×v where m represents mass (kg) and v is speed (m/s). Then, you have to substitute the values :
Answer:
It increases by four times the initial amplitude.
Explanation:
The amplitude of a sounde is inversely proportional to the square of the distance between the listener and the sound source:
In this problem, the distance is decreased to hald the initial distance, so we can write
therefore, the new amplitude will be
So, the amplitude increases by a factor 4.
Answer:
Yes the statement is correct
Explanation:
The de-broglie relation is mathematically represented as
where
p is momentum of the system
From the relation we can see that the wavelength is inversely proportional to the momentum of the particle.
Answer:
1.Temperature is a condition that affects the speed of sound. Heat, like sound, is a form of kinetic energy. Molecules at higher temperatures have more energy, thus they can vibrate faster. Since the molecules vibrate faster, sound waves can travel more quickly. 2.In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain. 3. The speed of sound is faster in solid materials and slower in liquids or gases. The velocity of a sound wave is affected by two properties of matter: the elastic properties and density.
Given :
- Acceleration (a) = 3.7 m/s²
weight is equal to :
Weight of the object is 0.37 Newtons ~
Correct choice is B