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tankabanditka [31]
3 years ago
8

Let's explore the assumptions we made. Look closely at Jessie's motion as she runs. In calculating her power output, we assumed

that the work she did was equal to the work done by the force of gravity on her body. Do you think that is a good assumption
Physics
1 answer:
densk [106]3 years ago
4 0

Answer:

No, it is not a good assumption

Explanation:

From the given information:

The work Jessie did was quite more than the work done by the force of gravity. This is because the gravity of the force on her body is perpendicular to its motion and the work done by Jessie is due to the muscular force of her body. Hence, the total power she produced is more than the calculated amount.

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Accorrding to Kepler's third law, a planet whose distance from the Sun is 2 A.U. would have an orbital period of how many Earth-
Lilit [14]

Answer:

hi

Explanation:

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3 years ago
What is the general pattern of the planetary distances from the sun
eimsori [14]

Answer:

The Titius–Bode law (sometimes termed just Bode's law) is a hypothesis that the bodies in some orbital systems, including the Sun's, orbit at semi-major axes in a function of planetary sequence. The formula suggests that, extending outward, each planet would be approximately twice as far from the Sun as the one before.

Explanation:

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4 years ago
Dogs are related to coyotes foxes and wolves. in what way are pet dogs more suited to domesticate domestic life then their wild
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3 years ago
If 500g of water at 20 degrees C is mixed with 750g of water at 30 degrees C, what will the temperature of the mixture be?
hjlf

Answer:

26 ^\circ C

Explanation:

Given that the temperature of  500g of water and 750 g of water are

at 20^{\circ}C and 30^\circ C respectively.

Let m_1=500g, T_1= 20^\circ C

and m_2=750g, T_2= 30^\circC.

The specific heat capacity of water is,

C= 4.186 J/g ^\circ C.

Let the final temperature of the mixture be T^\circ C.

As there is no energy loss, so, the energy loss by the water at higher temperature, i.e. 30^\circ C, will be equal to the energy gain by the water at lower temperature, i.e. 20^{\circ}C.

m_2C (T_2-T)=m_1C(T-T_1)

\Rightarrow m_2 (T_2-T)=m_1(T-T_1) [ both sides divided by C ]

\Rightarrow m_2T_2-m_2T=m_1T-m_1T_1

\Rightarrow m_1T+m_2T=m_1T_1+m_2T_2

\Rightarrow T=\frac{m_1T_1+m_2T_2}{m_1+m_2}

Now, putting the given value in the above equation, we have

\Rightarrow T=\frac {500\times 20+750\times 30}{500+750}

\Rightarrow T=26^\circ C.

Hence, the temperature of the mixture will be 26 ^\circ C.

5 0
3 years ago
Which of the following are not examples of circular motion? Check all that<br> apply
CaHeK987 [17]

B.riding on a ferris wheel

E.a satellite orbiting the Earth

Explanation:

A person riding on a ferris wheel and a satellite orbiting the earth both depicts circular motion.

Circular motion is the motion of a body about a fixed axis or center.

  • The motion path of the body forms a circle around the center.
  • In circular motion, the travel path is along a circle.
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Other options gives other types of motion.

learn more:

circular motion brainly.com/question/2562955

#learnwithBrainly

5 0
3 years ago
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