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Marina86 [1]
3 years ago
10

A roofing shingle elevator is lifting a 30.0-kg package to the top of a building at constant speed. The angle between the elevat

or track and the horizontal is 75∘. The power of the elevator is 800 W. Part A Determine the vertical component of the speed with which the package is moving up. Assume no friction is exerted by the incline surface on the package.

Physics
1 answer:
sashaice [31]3 years ago
3 0

Explanation:

Below is the

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Which letter represents the position of maximum potential energy of the pendulum
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If you mean the SI Unit of GPE, the answer is J for Joules.
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A. How will the Milky Way continue to move outward as a result of the Big Bang?
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2 years ago
A process with a negative change in enthalpy and a negative change in entropy will generally be:________
valentina_108 [34]

A process with a negative change in enthalpy and a negative change in entropy will generally be: <u>spontaneous</u>.

<h3>Gibbs free energy:</h3>

Since the Gibbs free energy is a parameter that tells us whether a chemical reaction is spontaneous (Gibbs free energy less than 0) or nonspontaneous (Gibbs free energy greater than 0) in this situation, we can describe it mathematically as:

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Therefore, any process with a negative change in enthalpy and a positive change in entropy will be spontaneous. If the enthalpy and the entropy are both negative, the subtraction becomes always negative, for which the Gibbs free energy is also negative.

One of the most crucial thermodynamic functions for the characterization of a system is the Gibbs free energy. It influences results like the voltage of an electrochemical cell and the equilibrium constant for a reversible reaction, among others.

Learn more about spontaneous here:

brainly.com/question/16975806

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3 0
1 year ago
Three boards, each 50 mm thick, are nailed together to form a beam that is subjected to a 1200-N vertical shear. Knowing that th
lisabon 2012 [21]

Answer:

Using equation

qs=F

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q=998.45 N

qs=F

s=F/q

s=700/998.45

spacing=s=0.701 m

7 0
2 years ago
Read 2 more answers
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