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charle [14.2K]
2 years ago
7

In the past, salmon would swim more than 1130 km (700 mi) to spawn at the headwaters of the Salmon River in central Idaho. The t

rip took about 22 days, and the fish consumed energy at a rate of 2.0 W for each kilogram of body mass. Part A What is the total energy used by a 2.0-kg salmon while making this 22-day trip?
Physics
1 answer:
8_murik_8 [283]2 years ago
6 0

Answer:

E_t_o_t_a_l=7.603MJ

Explanation:

The salmon's total energy use , which is equivalent to work done,W, by swimming upstream, is related to the specific mechanical power. Mechanical \ power per unit mass is defined by the equation:

\frac{p}{m}=\frac{1}{m}|\frac{dW}{dt}|=2W/kg\\\frac{1}{2}|\frac{W}{22\times 24 \times 60\times 60}|=2\\\\W=7.603MJ

Hence, the energy total for the 22-day trip is 7.603MJ

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A stock person at the local grocery store has a job consisting of the following five segments:
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Answer:

B

Explanation:

Work done can be said to be positive if the applied force has a component to be in the direction of the displacement and when the angle between the applied force and displacement is positive.

In 1 and 2 work done is positive

6 0
2 years ago
An object of mass m has these three forces acting on it (there is no normal force, "no surface"). F1 = 1 N, F2 = 9 N, and F3 = 5
hammer [34]

Answer:

solved

Explanation:

a) F_net = (F2 - F3)i - F1 j

b) |Fnet| = sqrt( (F2 - F3)^2 + F1^2)

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c) θ = tan^-1( (Fnet_y/Fnet_x)

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2 years ago
What can happen to an electron when sunlight hits it? select all that apply. select all that apply. it can drop down to a lower
vlabodo [156]
There are two possible answers:
<span>- it can move out to a higher electron shell
- </span><span> it can stay in its original shell
</span><span>
In fact, sunlight consists of photons. When sunlight hits an electron, the electron can absorbs a photon, so it gains energy: as a result, the electron can move to a higher electron shell, which corresponds to a high energy level in the atom, if the energy given by the photon is at least equal to the energy difference between the two levels. However, if the photon energy is not large enough, the electron will stay in the same shell.</span>
4 0
2 years ago
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A lamp uses a 230 V mains supply and transfers 96 J of energy every second. Work out the current through the lamp. Give your ans
sertanlavr [38]

Answer:

0.4 A

Explanation:

From the question,

Electric power = Voltage×current

P = VI.......................... Equation 1

Make I the subject of the equation

I = P/V..................... Equation 2

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Substitute into equation 2

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I = 0.4 A.

Hence the current is 0.4 A

8 0
2 years ago
Within an integrated circuit, each wafer is cut into sections, which
fiasKO [112]
The final answer is B hope its helps
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2 years ago
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