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Nookie1986 [14]
3 years ago
14

6. A physics book slides off a horizontal table top with a speed of 1.25m/s. It strikes a floor in 0.4s.

Physics
1 answer:
aliina [53]3 years ago
8 0

Answer:

4.11 m/s

Explanation:

Given:

v₀ₓ = 1.25 m/s

aₓ = 0 m/s²

v₀ᵧ = 0 m/s

aᵧ = -9.8 m/s²

t = 0.4 s

Find: v

First, in the x direction:

vₓ = aₓt + v₀ₓ

vₓ = (0 m/s²) (0.4 s) + 1.25 m/s

vₓ = 1.25 m/s

And in the y direction:

vᵧ = aᵧt + v₀ᵧ

vᵧ = (-9.8 m/s²) (0.4 s) + 0 m/s

vᵧ = -3.92 m/s

The net speed is found with Pythagorean theorem:

v² = vₓ² + vᵧ²

v² = (1.25 m/s)² + (-3.92 m/s)²

v = 4.11 m/s

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Answer:

it's all around you and it can't be destroyed

6 0
3 years ago
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The tongue weight of a trailer should be what percent of the gross trailer weight rating
mario62 [17]

Answer:

between 10 and 15 percent

Explanation:

How to put your load

- First load the heavy

The safe trailer starts loading correctly. Uneven weight can affect steering, brakes and swing control.

In general, 60% of the weight of the load should be in the front half of the trailer and 40% in the rear half (unless the manufacturer indicates something different). When you place the load, you want it to be balanced from side to side, keeping the center of gravity near the ground and on the axle of the trailer.

-  Hold your load

After balancing the load, you must hold it in place. An untapped load can move when the vehicle is moving and cause trailer instability.

- Trailer weight

To avoid overloading the trailer, look for the recommended weight rating. It is located on the VIN plate in the trailer chassis, usually on the tongue. Confirm the Gross Vehicle Weight Classification (GVWR) before towing.

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7 0
3 years ago
Can you please help - the answer I got so far is 7.624 but when I enter it in my homework in Quest, it i stating that this answe
torisob [31]

Answer:

-7.04

Explanation:

9.8 multipled by -0.719 b

6 0
3 years ago
In an RC circuit, what fraction of the final energy is stored in an initially uncharged capacitor after it has been charging for
4vir4ik [10]

Answer:

The  fraction fraction of the final energy is stored in an initially uncharged capacitor after it has been charging for 3.0 time constants is  

      k  = 0.903

Explanation:

From the question we are told that

     The time  constant  \tau  =  3

The potential across the capacitor can be mathematically represented as

     V  =  V_o  (1 -  e^{- \tau})

Where V_o is the voltage of the capacitor when it is fully charged

    So   at  \tau  =  3

     V  =  V_o  (1 -  e^{- 3})

     V  =  0.950213 V_o

   Generally energy stored in a capacitor is mathematically represented as

             E = \frac{1}{2 } * C  * V ^2

In this equation the energy stored is directly proportional to the the square of the potential across the capacitor

Now  since capacitance is  constant  at  \tau  =  3

        The  energy stored can be evaluated at as

         V^2 =  (0.950213 V_o )^2

       V^2 =  0.903  V_o ^2

Hence the fraction of the energy stored in an initially uncharged capacitor is  

      k  = 0.903

4 0
3 years ago
Can someone help please
love history [14]

Answer:

The correct answer is 24.

Explanation:

4 0
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