3 years ago

What is the reactive force when a fish swims through water?

1 answer:

7 0

The answer is D

This is an example of Newton's third law of motion.

The active force is the fish against the water, so the reactive force would be the reverse, the equal force of the water on the fish.

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What is described as the flow of charged particles?

rodikova [14]

Answer:

An electric current

Explanation:

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3 years ago

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What is the ﬁnal equilibrium temperature when 12 g of milk at 7◦C is added to 175 g of coﬀee at 69◦C? Assume the speciﬁc heats o

lina2011 [118]

Answer:

ﬁnal equilibrium temperature is 65.02 ◦C

Explanation:

Given data

milk = 12 g

temp milk = 7◦C

coffee = 175 g

coffee temp = 69◦C

to find out

ﬁnal equilibrium temperature

solution

we apply here equilibrium condition i.e m c ΔT

milk mass × c × ΔT = coffee mass × c × ΔT

12 × 1 × (T- 7) = 175 × 1 × ( 69- T)

12T - 84 = 12075 - 175 T

187 T = 12159

T = 65.02

so ﬁnal equilibrium temperature is 65.02 ◦C

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4 years ago

Would u rather/ be a polar bear or a grizzly bear

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3 years ago

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Resistor A has twice the resistance of resistor B. The two are connected in series and a potential difference is maintained acro

Ainat [17]

Answer:

<em>The thermal energy dissipated in A would be twice that in B</em>

Explanation:

Resistor B (RB)= R

Resistor A (RA)= 2 R

When they are connected in series the equivalent Resistance in the circuit would be;

Equivalent resistance = RA +RB = R + 2 R = 3 R;

From ohms law I = V/R

I = V/3 R

Now the thermal energy is the power dissipated by the circuit and can be obtained thus;

P = $I^{2}R$

Then,

$P_{A} = (\frac{V}{3R}) ^{2} *2 R\\\\P_{A} = \frac{V^{2} }{9R^{2} } *2R\\\\P_{A} = \frac{2}{9}( \frac{V^{2} }{R}) \\\\P_{B} = (\frac{V}{3R}) ^{2} * R\\\\P_{B} = \frac{V^{2} }{9R^{2} } *R\\\\P_{B} = \frac{1}{9}( \frac{V^{2} }{R})$

Therefore Pa : Pb = 2: 1, this means that the thermal energy dissipated in A would be twice that in B

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3 years ago

The Pasig Revolving Tower has an estimated height of 45.23 meters. How high is it in yard?

hichkok12 [17]

Answer:

50.26

I hope its help

Thank you

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3 years ago