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34kurt
3 years ago
6

99 POINTS

Physics
1 answer:
antoniya [11.8K]3 years ago
8 0

Answer:

Send a pic of it so i can mark it.

Explanation:

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Compute the work performed when 32 pounds is lifted 10 feet.
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W = force * displacement
W = 32 pounds * 10 feet
Now you need to convert it to newton and meters
W = 142 N * 3.048 m = 434 J
(I approximated the conversions- I hope it helps)
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What is the velocity of the 100 kg cart at point b?
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What other uses does petroleum have besides being used for fuel and lubricants
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You are an engineer in charge of designing a new generation of elevators for a prospective upgrade to the Empire State Building.
DanielleElmas [232]

Answer:

   t_total = 23.757 s

Explanation:

This is a kinematics exercise.

Let's start by calculating the distance and has to reach the limit speed of

v = 18.8 m / s

         v = v₀ + a t₁

the elevator starts with zero speed

         v = a t₁

         t₁ = v / a

         t₁ = 18.8 / 2.40

         t₁ = 7.833 s

in this time he runs

         y₁ = v₀ t₁ + ½ a t₁²

         y₁ = ½ a t₁²

         y₁ = ½ 2.40 7.833²

         y₁ = 73.627 m

This is the time and distance traveled until reaching the maximum speed, which will be constant throughout the rest of the trip.

           x_total = x₁ + x₂

           x₂ = x_total - x₁

           x₂ = 373 - 73,627

           x₂ = 299.373 m

this distance travels at constant speed,

           v = x₂ / t₂

           t₂ = x₂ / v

           t₂ = 299.373 / 18.8

           t₂ = 15.92 s

therefore the total travel time is

           t_total = t₁ + t₂

           t_total = 7.833 + 15.92

           t_total = 23.757 s

6 0
3 years ago
The decomposition of water into hydrogen gas H2 and oxygen gas O2 can be modeled by the balanced chemical equation
Volgvan

2H2O->2H2+O2


This balanced chemical equation represents the decomposition of water into hydrogen gas and oxygen gas



3 0
3 years ago
Read 2 more answers
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