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Anna007 [38]
3 years ago
8

A fighter jet travels 10km at an angle of 30 degrees. He then turns sharply and flies 25 km at an angle of 75 degrees. What is t

he fighter jets displacement
Physics
1 answer:
FrozenT [24]3 years ago
7 0

Answer:

24.4 km

Explanation:

First displacement , d' = 10 km at an angle 30°

second displacement, d'' = 25 km at an angle 75° with the previous one

Write the displacements in the vector form

\overrightarrow{d'} =10 ( Cos 30 \widehat{i} + Sin 30 \widehat{j})

\overrightarrow{d'} =8.66\widehat{i} + 5\widehat{j}

\overrightarrow{d''} =25 ( - Cos 45 \widehat{i} + Sin 45 \widehat{j})

\overrightarrow{d''} =-17.68\widehat{i} + 17.68\widehat{j}

The net displacement is given by

\overrightarrow{d}= \overrightarrow{d'}+ \overrightarrow{d''}

\overrightarrow{d}= - 9.02 \widehat{i} + 22.68 \widehat{j}

the magnitude of the displacement is given by

d=\sqrt{9.02^{2}+22.68^{2}}

d = 24.4 km

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A mass of gas has a volume of 4m3, a temperature of 290k, and an absolute pressure of 475 kpa. When the gas is allowed to expand
dsp73
P1v1/t1 = p2v2/t2
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Do Earth's continents gain or lose water, considering evaporation and precipitation together? How much ? Plz help :)) Thx
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<em>The amount of water in circulation is the same</em>

Explanation:

The water cycle is the pathway in which water moves from the atmosphere to the earth and back to atmosphere ones again.

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With the water cycle, the movement of water via precipitation and evaporation is the same on earth.

5 0
3 years ago
3
kap26 [50]

The increase in temperature that will result if 225.0 g of copper absorbs 5000 J of heat energy is 57.72°C.

<h3>How to calculate temperature change?</h3>

The temperature change of a substance can be calculated using the following formula:

Q = m × c × ∆T

Where;

  • Q = quantity of heat absorbed or released
  • m = mass of substance
  • c = specific heat capacity
  • ∆T = change in temperature

5000 = 225 × 0.385 × ∆T

5000 = 86.63∆T

∆T = 5000/86.63

∆T = 57.72°C

Therefore, the increase in temperature that will result if 225.0 g of copper absorbs 5000 J of heat energy is 57.72°C.

Learn more about temperature change at: brainly.com/question/11464844

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3 0
2 years ago
Calculate the current in a circuit if 500 C of charge passes through it in 10 minutes. *
Sloan [31]

Answer:

Choice a. Approximately 0.83\; \rm A on average.

Explanation:

The electric current through a wire is the rate at which electric charge flows through a cross-section of this wire.

Assume that electric charge of size Q flowed through a wire cross-section over a period of time t. The average current in that wire would be:

\displaystyle I = \frac{Q}{t}.

For this question:

  • Q = 500\; \rm C, whereas
  • t = 10\; \rm \text{minutes}.

Therefore, the average current in this circuit would be:

\displaystyle I = \frac{Q}{t} = \frac{500\; \rm C}{10\; \text{minutes}} = 50\; \rm C /\text{minute}.

However, the units in the choices are all in \rm A (for Amperes.) One Ampere is equal to one \rm C / \text{second}. It will take some unit conversations to change the unit of I = 50\; \rm C/ \text{minute} (coulombs-per-minute) to coulombs-per-second.

\begin{aligned}I &= 50\; \rm C/ \text{minute} \\ &= \frac{50\; \rm C}{1\; \rm \text{minute}} \times \frac{1 \; \text{minute}}{60\; \rm \text{seconds}} \approx 0.83\; \rm C/ \text{second} = 0.83 \; \rm A\end{aligned}.

Hence, the most accurate choice here would be choice a.

7 0
3 years ago
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