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Nataly
19 hours ago
5

Some gliders are launched from the ground by means of a winch, which rapidly reels in a towing cable attached to the glider. Wha

t average power must the winch supply in order to accelerate a 181-kg ultralight glider from rest to 25.7 m/s over a horizontal distance of 46.9 m? Assume that friction and air resistance are negligible, and that the tension in the winch cable is constant.
Physics
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A 3030 cmcm wrench is used to loosen a bolt with a force applied 0.30.3 mm from the bolt. It takes 6060 NN to loosen the bolt wh
Softa [3030]

Complete Question

A 30 cm cm wrench is employed to loosen a bolt, with force applied 0.30m from the bolt. It requires 60 N to loosen the bolt when force is applied perpendicular to the wrench. How much force would be necessary if the force were applied at a 30-degree angle from perpendicular?

Response:

The strength needed is F_{\theta } = 69.28 \ N

Clarification:

According to the problem, we know that

    The length of the wrench is L = 30 cm = \frac{30}{100} = 0.3 \ m

    The distance from the bolt is  d = 0.30 m

      The force necessary to loosen the bolt is F = 60 N

       The angle of application is \theta = 30 ^o

Generally, the torque required for loosening the bolt is defined as

       \tau = F * d

        \tau = 60 * 0.3

        \tau = 18 Nm

Now for the bolt to loosen at \theta the torque at 90° must equal that at \theta

Thus, the torque at \theta is represented mathematically as

          \tau = F_{\theta }d cos \theta

substituting values gives us

           18 = F_{\theta } * 0.3 cos (30)

           F_{\theta } = \frac{18}{0.3 cos (30)}

           F_{\theta } = 69.28 \ N

       

7 0
2 months ago
You are working as an assistant to an air-traffic controller at the local airport, from which small airplanes take off and land.
serg [3582]

Answer:

d = 2021.6 km

Explanation:

This distance problem can be solved using vector analysis; it's best to find each plane's position components before applying the Pythagorean theorem to calculate the separation between them.

For Airplane 1:

Height   y₁ = 800m

Angle θ = 25°

           cos 25 = x / r

           sin 25 = z / r

           x₁ = r cos 20

           z₁ = r sin 25

          x₁ = 18 103 cos 25 = 16,314 103 m = 16314 m

          z₁ = 18 103 sin 25 = 7,607 103 m = 7607 m

For Plane 2:

Height   y₂ = 1100 m

Angle θ = 20°

          x₂ = 20 103 cos 25 = 18.126 103 m = 18126 m

          z₂ = 20 103 sin 25 = 8.452 103 m = 8452 m

To determine the distance between the planes using the Pythagorean theorem:

         d² = (x₂-x₁)² + (y₂-y₁)² + (z₂-z₁)²2

Now, we perform the calculations:

        d² = (18126-16314)²  + (1100-800)² + (8452-7607)²

        d² = 3,283 106 + 9 104 + 7,140 105

        d² = (328.3 + 9 + 71.40) 10⁴

        d = √(408.7 10⁴)

        d = 20,216 10² m

        d = 2021.6 km

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Which trailer has more downward pressure where it attaches to the car?
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The trailer that is loaded the most. The total weight does not matter; it is about how the load is distributed. For example, our 12,000 lb snow cat trailer has weight distribution that results in less than 100 lbs of tongue weight. Heavy tongue weight can create issues, as it can shift the weight off the front wheels of the towing vehicle, causing instability.

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We are required to find the charge-to-mass ratio.
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