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Rom4ik [11]
3 years ago
14

a car travelling 90 km/hr is 100m behind a truck travelling 75 km/hr. Assuming both vehicles moving at constant velocity,calcula

te the time taken for the car to reach the truck.​
Physics
1 answer:
nika2105 [10]3 years ago
7 0

90t - .100 = 75t

90t - 75t = 0.100

15t = 0.100

t = 0.0067

<u>t = 0.0067 hours or 24.12 seconds</u> (.0067 * 60 minutes * 60 seconds)

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Sergio039 [100]

Answer:

⇔⇔⇔↑∑∑∩∅¬⊕║⊇↔∴∉∵

Explanation:

8 0
3 years ago
When a switch is closed to complete a DC series RL circuit which has a large time constant, Group of answer choices the electric
puteri [66]

Answer:

The electric and magnetic fields gradually increase.

Explanation:

Time constant in RL circuits, denoted by τ, is equal to the value of L / R which is the value of the inductor over the resistor. It is used to calculate the point when the current will reach the maximum value in the steady state of the circuit. Because of this behavior of the circuit, the magnetic field and the electric field gradually increase to their maximum values.

I hope this answer helps.

3 0
4 years ago
A tetrahedron has an equilateral triangle base with 25.0-cm-long edges and three equilateral triangle sides. The base is paralle
KATRIN_1 [288]

Answer:

electric flux through the three side = 2.35 N m²/C

Explanation:

given,

equilateral triangle of base = 25 cm

electric field strength = 260 N/C

Area of triangle = \dfrac{\sqrt{3}}{4}a^2

                          =  \dfrac{\sqrt{3}}{4} 0.25^2

                          = 0.0271 m³

electric flux = E. A

                   = 260 × 0.0271

                   = 7.046 N m²/C

since, tetrahedron does not enclose any charge so, net flux through tetrahedron is zero.

electric flux through the three side = (electric flux through base)/3

                               = \dfrac{7.046}{3}

electric flux through the three side = 2.35 N m²/C

4 0
3 years ago
A boat crosses a river of width 229 m in which the current has a uniform speed of 0.756 m/s. The pilot maintains a bearing (i.e.
Stolb23 [73]

Answer:

1.85 m/s

102.438 m

Explanation:

From vector motion

The resultant velocity

R=\sqrt{0.756^2+1.69^2}\\\Rightarrow R=1.85\ m/s

The magnitude of speed of the speed of the boat relative to a stationary shore observer is 1.85 m/s

The distance covered is 229 m

Time = Distance / Speed

\text{Time}=\frac{229}{1.69}\\\Rightarrow \text{Time}=135.50\ s

Distance = Speed of current × Time

Distance = 0.756×135.5 = 102.438 m

The boat will be 102.438 m from the initial position is the boat when it reaches the opposite shore

3 0
4 years ago
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Bezzdna [24]

Answer:

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In winter the sun is father away from earth and in Summer it is closer...

Explanation:

8 0
3 years ago
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