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garri49 [273]
3 years ago
8

Pls answer I will make brainlist

Physics
1 answer:
Semenov [28]3 years ago
3 0
Reflection: a change in direction of a wave at a boundary between two different media.
sentence: i saw my reflection in the mirror.

refraction: the bending of light as it passes from one transparent substance into another.
sentence: when light goes through glass, it’s a refraction.

diffraction: the bending of waves around the corners of an obstacle.
sentence: spaced tracks on a CD act as a diffraction.

absorption: the process or action by which one thing absorbs or is absorbed by another.
sentence: heat waves hitting the beach usually give most of their energy to the sand.

interference: when two waves lay on each other and their energies are either added together or cancelled out.
sentence: interference waves can be observed with all types of waves.

standing wave: two waves moving in opposite directions. they both have the same amplitude or frequency.
sentence: plucking the string of a guitar is an example of standing waves.

resonance: increased amplitude that occurs when the frequency of a force is equal or close to a natural frequency.
sentence:a buzz in your car that only occurs at a certain speed is an example or resonance.
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A crate with a mass of 175.5 kg is suspended from the end of a uniform boom with a mass of 94.7 kg. The upper end of the boom is
kotykmax [81]

323.5 N is the tension in the cable.

Given

Mass of crate(M) = 175.5 kg

Mass of boom(m) = 94.7 kg

The tension, T in the cable can be calculated by taking moments of force about the central point of marked X.

The Angle of the boom with the horizontal can be calculated by

tanθ = 5/10

θ = tan⁻¹(5/10) = 26.56°

Angle of the boom with horizontal is 26.56°

The angle of cable with horizontal can be calculated by

tan B = 4/10

B = tan⁻¹(4/10) = 21.80°

Angle of cable with horizontal is 21.80°

Taking moments of force about the point X

(Mcosθ + mcosθ) 0.5 = T(sin(θ +B)1

(175.5 × cos 26.56 + 94.7 × cos 26.56 )× 0.5 = T (sin(26.56 + 21.80) X 1

By calculating, we get

Tension(T) = 241.68/0.747

Tension(T) = 323.5 N

Hence, 323.5 N is the tension in the cable.

Learn more about Tension here brainly.com/question/24994188

#SPJ1

8 0
2 years ago
Hi:):):):):):):):):):):):):):):):):):):):):):):):)
Aloiza [94]

Answer:

hi. :)))))))))))))))))))))

6 0
3 years ago
Two cars leave towns 800 kilometers apart at the same time and travel toward each other. One car's rate is 18 kilometers per hou
vivado [14]

Answer:

speed of slower car is 71 km/h

Explanation:

The distance between two cars is given as

d = 800 km

time taken by two cars to meet is given as

t = 5 hours

now the relative speed of two cars is given as

v_{rel} = \frac{d}{t}

v_1 + v_2 = \frac{800}{5} = 160 km/h

also it is given that the difference of speed of two cars is

v_1 - v_2 = 18 km/h

now from above two equations we have

v_1 = 89 km/h

v_2 = 71 km/h

7 0
3 years ago
Imagine a landing craft approaching the surface of Callisto, one of Jupiter's moons. If the engine provides an upward force (thr
nordsb [41]

Answer:

W=3456 N

Explanation:

Force 1 F_1=3456

Force 2 F_2=2333N

Acceleration at stage 2 a_2=0.39

Generally the weight of the Craft W is given as

W= upward force(thrust)

Therefore

W=3456 N

5 0
3 years ago
What is the organism that lives inside or on the outside of another organism that feeds off called?
enot [183]
An organism that lives inside or on the outside of another organism that feeds off is called a parasite.
8 0
4 years ago
Read 2 more answers
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