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hammer [34]
2 years ago
12

A baby carriage is sitting at the top of a hill that is 35 m high. The

Physics
2 answers:
DerKrebs [107]2 years ago
7 0

Answer:

\boxed {\boxed {\sf E_p= 515.025 \ J}}

Explanation:

Potential energy is found using this formula:

E_p= mgh

The mass of the baby in the carriage is 1.5 kilograms and the height is 35 meters. Assuming this is on Earth, the gravitational acceleration is 9.81 meters per square second.

m=1.5 \ kg \\g= 9.81 \ m/s^2\\h= 35 \ m

Substitute the values into the formula.

E_p= (1.5 \ kg )( 9.81 \ m/s^2)(35 \ m )

Multiply the first numbers together.

E_p= 14.715 \ kg*m/s^2 (35 \ m )

Multiply again.

E_p= 515.025 \ kg*m^2/s^2

  • 1 kilogram square meter per square second is equal to 1 Joule.
  • Our answer of 515.025 kg*m²/s² is equal to 515.025 J

E_p= 515.025 \ J

The potential energy is 515.025 Joules.

Lemur [1.5K]2 years ago
5 0
P=M(mass)G(Gravity)H(Height)

Gravity=9.8

M=1.5 G=9.8 H=35

so multiply all

=514.5 potential energy

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10 Km.
S= Speed
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S= d/t
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You set out to design a car that uses the energy stored in a flywheel consisting of a uniform 101-kg cylinder of radius r that h
Ket [755]
Ok, assuming "mj" in the question is Megajoules MJ) you need a total amount of rotational kinetic energy in the fly wheel at the beginning of the trip that equals
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The expression for rotational kinetic energy is

E = (1/2)Iω²  

where I is the moment of inertia of the fly wheel and ω is the angular velocity.  
So this comes down to finding the value of I that gives the required energy.  We know the mass is 101kg.  The formula for a solid cylinder's moment of inertia is

 I = (1/2)mR²

We want (1/2)Iω² = 7.2e8 J and we know ω is limited to 470 revs/sec.  However, ω must be in radians per second so multiply it by 2π to get 
ω = 2953.1 rad/s
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I = 2(7.2e8 J)/(2953.1 rad/s)² = 165.12 kg·m²

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3 years ago
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3 years ago
HURRY! PLEASE HELP!!!!<br><br><br> 3. What methods are you using to test this (or each) hypothesis?
Pie

Answer:

How to Test Hypotheses

State the hypotheses. Every hypothesis test requires the analyst to state a null hypothesis and an alternative hypothesis. ...

Formulate an analysis plan. The analysis plan describes how to use sample data to accept or reject the null hypothesis. ...

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4 0
2 years ago
If you dribble a basketball with a frequency of 1.77 Hz, how long does it take for you to complete 12 dribbles?
Licemer1 [7]
<h2>It takes 6.78 seconds to complete 12 dribbles.</h2>

Explanation:

Frequency of dribble = 1.77 Hz

That is

         Number of dribbles in 1 second = 1.77

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Now we need to find how long does it take for you to complete 12 dribbles.

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         Time taken for 12 dribbles = 6.78 seconds      

It takes 6.78 seconds to complete 12 dribbles.  

8 0
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