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MakcuM [25]
3 years ago
7

Thermal effects refers to the:

Physics
2 answers:
a_sh-v [17]3 years ago
4 0

Answer: C.removal of heat by cooling towers

The thermal effect refers to the thermal radiations emitted by the body. The thermal effect refers to the heat lost by the body or object. The removal of heat by cooling towers is an example of thermal effect as cooling tower is a body from which heat is being lost or removed due to thermal effect.

Marat540 [252]3 years ago
3 0

The correct answer is actually C. Not A.

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A projectile is launched with an initial velocity of (40 m/s), at an angle of (30°) above
zlopas [31]

Answer:

330.5  m

Explanation:

In this case, the object is launched horizontally at 30° with an initial velocity of 40 m/s .

The maximum height will be calculated as;

h=\frac{v^2_isin^2\alpha }{2g}

where ∝ is the angle of launch = 30°

vi= initial launch velocity = 40 m/s

g= 10 m/s²

h= 40²*sin²40° / 2*10

h={1600*0.4132 }/ 20

h= 661.1/2 = 330.5  m

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2 years ago
Could you help me with this question?
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Answer:

Magnitude of static friction force is 70 sin40° = 44.99 N.  

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Normal force is equal to 70 cos40° = 53.62 N.

Explanation:

We apply newton law of moton equation along the plane and perpendicular to plane;

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70 sin 40° = f_{r}  ---------------(1)

70 cos 40° = N --------------(2)

f_{r}_{max} = μN -----------------(3)

So, it depends on the value of μ that the friction is maximum or not .

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