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gregori [183]
3 years ago
5

In 2-3 complete sentences, explain the relationship between speed, frequency, and wavelength.

Physics
1 answer:
Ahat [919]3 years ago
7 0
The relationship of the speed of sound, its frequency, and wavelength is the same as for all waves: vw = fλ, where vw is the speed of sound, f is its frequency, and λ is its wavelength. ... The frequency is the same as that of the source and is the number of waves that pass a point per unit time.
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A 10 kg turkey, He kicks the 0.5 kg ball with a force of 50N for 0.2 seconds and the ball flies straight away horizontally from
Harman [31]

Answer:

a. 20m/s

b.50N

c. Turkey has a larger mass than the ball. Neglible final acceleration and therefore remains stationery.

Explanation:

a. Given the force as 50N, times as 0.2seconds and the weight of the ball as 0.5 kg, it's final velocity can be calculated as:

F\bigtriangleup t=m\bigtriangleup v\\\\50N\times 0.2s=0.5kg\times \bigtriangleup v\\\\\bigtriangleup v=2(50N\times0.2)\\\\=20m/s

Hence, the velocity of the ball after the kick is 20m/s

b.The force felt by the turkey:

#Applying Newton's 3rd Law of motion, opposite and equal reaction:

-The turkey felt a force of 50N but in the opposite direction to the same force felt by the ball.

c. Using the law of momentum conservation:

-Due to ther external forces exerted on the turkey, it remains stationery.

-The turkey has a larger mass than the ball. It will therefore have a negligible acceleration if any and thus remains stationery.

-Momentum is not conserved due to these external forces.

5 0
3 years ago
A frictionless pendulum is made with a bob of mass 19.7 kg. The bob is held at height = 0.934 meter above the bottom of its traj
Alika [10]

Answer:

265 J

Explanation:

Energy=PE+KE=mgh+ 0.5mv^{2} where KE is kinetic energy, PE is potential energy, m is the mass of an object, v is the speed, h is the height and g is acceleration due to gravity.

Substituting 19.7 Kg for mass, 0.934 for h, 2.93 for v and 9.81 for g then

Energy=19.7(9.81*0.934+0.5*2.93^{2})=265.063303\approx 265 J

4 0
3 years ago
What is atherosclerosis? What is the result of atherosclerosis?
ipn [44]

Answer:

Atherosclerosis is a disease of the arteries characterized by the deposition of plaques of fatty material on the inner walls.

Explanation:

Atherosclerosis often has no symptoms until a plaque ruptures or the buildup is severe enough to block blood flow.

5 0
3 years ago
Read 2 more answers
"Nuclear fission is the splitting of electrons in the outer shell of an atom." True or False?
sweet-ann [11.9K]

Answer:

The correct answer is:

False

Explanation:

Nuclear fission is the splitting of nucleus of an atom which results in the emission of high amount of energy.

<u>Example:</u>

Heavy atom (i.e. uranium) when bombarded with neutrons, its nucleus split into smaller lighter weight nuclei and release a huge amount of energy. (Nuclear fission also takes place without neutrons i.e. in the form of radioactive decay (the process in which an unstable nucleus of an atom releases energy in the form of radiation)).

3 0
3 years ago
A machine has an efficiency of 70%. How much work dose the machine do when 20,000 J of work is done on it
hram777 [196]
If the machine works at a 70% efficiency it must complete 14,000 work out of the 20,000
3 0
3 years ago
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