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tamaranim1 [39]
3 years ago
13

Which best summarizes a concept related to the work-energy theorem?

Physics
2 answers:
Sholpan [36]3 years ago
5 0

the answer is A.) When work is positive, the environment does work on an object.  

rusak2 [61]3 years ago
4 0
The concept of work-energy theorem has become much of a fundamental principle in the field of physics, mechanics, and engineering. In addition, this theory primarily states that the change of kinetic energy of the system is equal to the sum of the work done that is acted by all forces on the object.
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The principal limitation of wind power is unpredictability. Please select the best answer from the choices provided
Lady_Fox [76]
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6 0
4 years ago
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A uniform bar has two small balls glued to its ends. The bar is 2.00 m long and has mass 4.00 kg, while the balls each have mass
Talja [164]

Answer:

a)1.93 kg-m^2

b) 1.45  kg-m^2

c) = 0

d) 1.15 kg-m^2

Explanation:

mass of the bar M = 4 kg

length of the bar = 2 m

mass of balls m1= m2= 0.3 kg

moment of inertia of bar I= \frac{ML^2}{12}

about an axis perpendicular to the bar through its center.

a) MOI of bar + 2×m×(L/2)^2

I= \frac{ML^2}{12}+ 2m\frac{L}{2}^2

now putting the values of m, M and L as above and solving we get

I= 1.93 kg-m^2

b) perpendicular to the bar through one of the balls

I=M\frac{L^2}{3} +mL^2

I=4\frac{2^2}{3} +0.3\times4^2= 1.45  kg-m^2

c) parallel to the bar through both balls

zero as the no mass distribution along the parallel to the bar through both balls.

d) parallel to the bar and 0.500 m from it.

I=(M+2m_1)\frac{1}{2}^2

putting values and solving we get

1.15 kg-m^2

4 0
4 years ago
He drives 150 meters in 18 seconds. Assuming constant speed, what is his speed in meters per second?
ira [324]

Answer:

Explanation:

Givens

d = 150 meters

t  = 18 seconds

r (rate) = ?

Formula

r = d/t

Solution

r = 150/18

r = 8.33 m/s

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3 years ago
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Marat540 [252]

Explanation:

Below is an attachment containing the solution.

3 0
4 years ago
Pls guys what is displacement​
KengaRu [80]

Answer:

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3 years ago
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