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MAXImum [283]
2 years ago
9

ID like to say thx everyone who is on brainly u guys helped me get through my quiz so thx

Physics
2 answers:
VARVARA [1.3K]2 years ago
8 0

Answer:

I want to know how your experience has been on brainly. I hope it is good. I really like spending time helping others here. If you have any other questions please ask me :)

Explanation:

Gnesinka [82]2 years ago
5 0

Answer:

u welcome

Explanation:

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When is the electric flux on a section of a closed surface positive?.
rodikova [14]
When the electric field pierces outward through the section.
5 0
2 years ago
A 160-N child sits on a light swing and is pulled back and held with a horizontal force of 100 N. The magnitude of the tension f
guajiro [1.7K]

Answer:

T = 190 N

Explanation:

When child is sitting on the swing then the weight of the child is vertically downwards

So it is

F_g = 160 N

now a force of 100 N is acting on the swing in horizontal direction

so it is given as

F_x = 100 N

now the net force is resultant force due to gravity and horizontal force

so it is given as

T = \sqrt{F_x^2 + F_g^2}

T = \sqrt{100^2 + 160^2}

T = 190 N

3 0
2 years ago
The outer surface of a skier’s clothes of emissivity 0.7000.700 is at a temperature of 5.505.50 °C. Find the rate of radiation i
Ludmilka [50]

Answer:

121.0 W

Explanation:

We use the equation for rate of heat transfer during radiation.

Q/t = σεA(T₂⁴ - T₁⁴)

Since temperature of surroundings = T₁ = -20.0°C = 273 +(-20) = 253 K, and temperature of skier's clothes = T₂ = 5.50°C = 273 + 5.50 = 278.5 K.

Surface area of skier , A = 1.60 m², emissivity of skier's clothes,  ε = 0.70 and σ =  5.67 × 10⁻⁸ W/m²K⁴ .

Therefore, the rate of heat transfer by radiation Q/t is

Q/t = σεA(T₂⁴ - T₁⁴) = (5.67 × 10⁻⁸ W/m²K⁴ ) × 0.70 × 1.60 m² × (278.5⁴ - 253⁴) = 6.3054 × (1918750544.0625) × 10⁻⁸ W = 1.2098 × 10² W = 120.98 W ≅ 121.0 W

7 0
3 years ago
Read 2 more answers
The Strength of an electromagnet can be increased by reducing the number of turns on the wire coil true or false
ad-work [718]

Answer:the answer is true

Explanation:because as u add more coil/wrap more coil around the nail the field  get stronger and stronger to attract more nails

Hope this helped

5 0
3 years ago
HELP ASAP PLEASE!!!!!!!
pshichka [43]

Answer:a

Explanation: the plates shifts cracking making earthquakes

8 0
2 years ago
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