If a crate weighing 350. N is at rest on an inclined plane whose angle provides the crate with 150. N of normal force, at what angle to the horizontal would the ramp be?
Answers
Answer:
Explanation:
If we draw a free body diagram of the crate we will have the following related to the net force in the y-axis:
(1)
Hence:
(2)
Where:
is the normal force
is the weight of the crate
is the angle of the inclined plane where the crate is
Findind :
(3)
(4)
Finally:
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Can somebody plz answer this correct quickly!!!! :D(WILL MARK BRAINLIEST) (Use google idc)
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2. In a famous letter to Robert Hooke, Isaac Newton wrote, "If I have seen further it is only by standing on the shoulders of giants." Which of the following does this quote best demonstrate? (Points : 1) the cumulative nature of modern knowledge of physics how physicists form explanations using logic and evidence inductive vs. deductive reasoning how inductive reasoning is important in the study of physics
what would be the final temperature of a mixture of 50g water at 20c temperature and 50g of water at 40c temperature?
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Answer:
The correct answer is Joseph Stalin.
Explanation:
Joseph Vissarionovich Stalin was a Soviet politician who led the soviet union from 1929 - 1953. Stalin self declared himself as the dictator by 1930s. He was the person behind the Great Purge or "Great Terror" in which around a million were imprisoned and some 750,000 were executed. This campaign was led just to execute all those who were a threat to his party.
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Answer:
14178 N
Explanation:
5560 Kg * 2.55m/s^2 = 14178 Newtons (Kg*m/s^2)
Answers
= 331/680= 0.48m
Answer::l=V/f
= 331/680= 0.48m
Explanation: if that isnt an option, round up to 0.5, thats what i had to do
Answers
Answer:
beam balance
Explanation:
A beam balance compares the sample mass with a standard reference mass
b. no disturbance
c. softer noises
d. no sounds
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When constructive interference occurs in sound waves, it will causelouder beats. The answer is letter A. This is because the waves of the samefrequency travel in the same direction. This enables the waves to add up havingthe same frequency and direction but with greater amplitude.
B. Interference is observed with light.
C. Diffraction is observed with light.
D. Unlike sound, light waves don't need a medium to self-propagate
Answers
The correct answer to the question is : D) Unlike sound, light waves don't need a medium to self-propagate
EXPLANATION:
Before coming into any conclusion, first we have to understand the nature of sound and light.
A sound wave is a longitudinal wave which requires a medium for its propagation. It can not move in space as space contains no material medium for its propagation.
Light is normally considered as electromagnetic wave which does not require any medium for its propagation. It can travel in space also.
The interference and diffraction can not be explained by the particle nature of light.
Hence, the argument that partially support that light behaves just like a particle is the last statement i.e Unlike sound, light waves do not need a medium to self-propagate.
As there is no matter in vacuum then sound cannot be transmitted. But the transmission of light is quite different, its particle and wave nature is well suited for travel in vacuum.