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Natasha_Volkova [10]
3 years ago
6

What are the condition required work to be done

Physics
2 answers:
Wewaii [24]3 years ago
7 0

Answer:

The first is that the object moves

Phantasy [73]3 years ago
4 0
Object must move in the direction of the force applied
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A weather balloon is inflated to a volume of 27.2 l at a pressure of 753 mmhg and a temperature of 30.9 ∘c. the balloon rises in
gayaneshka [121]

By idea gas equation we can say

PV = nRT

here P = pressure

V = volume

n = number of moles

R = Avagadro gas constant

T = temperature

So from above expression you can see that for constant number of moleswe can say

\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}

\frac{753*27.2}{273+30.9} = \frac{395*V_2}{273-15.9}

67.4 = 1.54*V_2

V_2 = 43.9 L

So finally the volume will be 43.9 L

6 0
3 years ago
Kepler's first law of planetary motion states that ________.
ZanzabumX [31]

Answer:

Kepler's first law of planetary motion states that planets orbit the Sun in elliptical orbits, with the Sun located at one focus (option b)

Explanation:

Kepler's laws or laws of planetary motion are scientific laws that describe the movement of the planets around the Sun. The fundamental contribution of Kepler's laws was to show that the orbits of the planets are elliptical and not circular as was previously believed.

Kepler's laws are kinetic laws. This means that its function is to describe the planetary motion.

Kepler formulated three laws:

  • First Law: The planets move around the Sun describing elliptical orbits, the Sun being located in one of the focus.
  • Second Law: The vector radius that joins the planet and the Sun sweeps equal areas in equal times.
  • Third Law: For any planet, the square of its orbital period (time it takes to go around the Sun) is directly proportional to the cube of the mean distance from the Sun.

An ellipse is a closed curve that has two symmetrical axes, called foci or fixed points. In simpler words, an ellipse can be described as a flattened circle.

The degree of flattening of a closed curve is called eccentricity. When the eccentricity is equal to 0, the curve forms a perfect circle. On the other hand, when the eccentricity is greater than 0, the sides of the curve are flattened to form an ellipse.

<u><em>Kepler's first law of planetary motion states that planets orbit the Sun in elliptical orbits, with the Sun located at one focus (option b)</em></u>

4 0
3 years ago
michael tells Sara he weighs 104 pounds. Sara says she is 44 kilograms. If there are 2.2 pounds in a kilogram, who is heavier?
n200080 [17]
Michael is heavier Sara only weighs 96.8 kg
4 0
4 years ago
Read 2 more answers
How many common phases of matter are there? A. Four B. Eight C. Five D. Three
kirill115 [55]
three
SLG
solid 
liquid
gas
3 0
3 years ago
The gravitational potential is a distance z=0.17 m away from a distribution of mass that has the following equation:
sveta [45]

gravitational potential is given as

V = \frac{GM}{R^2}(R^2 + Z^2)^0.5

E = -\frac{dV}{dz}

E = -\frac{GM}{R^2}\frac{d}{dz}(R^2+z^2)^0.5

E  = -\frac{GM}{R^2}*0.5(R^2+z^2)^-0.5*2z

E = -\frac{GM*z}{R^2*(R^2 + z^2)^0.5}

now plug in all values given

M = 110 kg

R = 0.55 m

z = 0.17 m

E = -\frac{6.67 * 10^{-11}* 110*0.17}{0.55^2*(0.55^2 + 0.17^2)^0.5}

E = 7.16 * 10^{-9} N/kg

so above is the field intensity

4 0
3 years ago
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