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Margaret [11]
3 years ago
9

boiling water transfers energy to an ice cube. this is an example of temperature heat heat capacity thermal energy

Physics
1 answer:
Lyrx [107]3 years ago
6 0
Thermal energy is the answer I think.
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A small hot-air balloon is filled with 1.02×106 l of air (d = 1.20 g/l). as the air in the balloon is heated, it expands to 1.09
liberstina [14]
The first thing you should know for this case is that density is defined as the quotient between mass and volume.
 d = m / v
 We have two states:
 State 1:
 d1 = 1.20 g / l
 v1 = 1.02 × 106 l
 State 2:
 v2 = 1.09 × 106 l
 Since the mass remains constant, then:
 m = d1 * v1
 Then, the density in state two will be:
 d2 = m / v2
 Substituting the value of the mass we have:
 d2 = (d1 * v1) / v2
 Substituting the values:
 d2 = ((1.20) * (1.02 * 10 ^ 6)) / (1.09 * 10 ^ 6) = 1.12 g / l
 answer:
 The density of the heated air in the balloon is 1.12 g / l
7 0
3 years ago
Read 2 more answers
What factors does the speed of atoms depend on?
Vedmedyk [2.9K]
<h2>Answer:</h2>

The speed of atoms depends upon:

  • Temperature: Speed of atom is directly proportional to the temperature of atoms.
  • Pressure : It is also directly proportional to the speed of an atom.
  • Volume of gas : As the volume of gas increases, collision between atoms increases with increasing the speed of atom
  • Number of atoms surrounding: More number of atoms leads to more collisions, increasing speed of atoms.


4 0
3 years ago
Which of the best describes a solution
Andreyy89
Answer:

1).A mixture having a uniform composition where the components can't be seen separately and all components are in the same state best describes a solution. In chemistry, a solution is a homogeneous mixture composed of two or more substances.
3 0
2 years ago
A concave mirror has a focal length of 11 cm . What is its radius of curvature?
OverLord2011 [107]

Answer:

22cm

Explanation:

focal length = 11cm

radius of curvature,r = 2f

r= 2 x 11

r=22cm

6 0
3 years ago
A meter stick balances at the 50.0-cm mark. If a mass of 50.0 g is placed at the 90.0-cm mark, the stick balances at the 61.3-cm
Airida [17]

Answer:

126.99115 g

Explanation:

50 g at 90 cm

Stick balances at 61.3 cm

x = Distance of the third 0.6 kg mass

Meter stick hanging at 50 cm

Torque about the support point is given by (torque is conserved)

mgl_1=Mgl_2\\\Rightarrow M=\dfrac{ml_1}{l_2}\\\Rightarrow M=\dfrac{50\times (61.3-90)}{50-61.3}\\\Rightarrow M=126.99115\ g

The mass of the meter stick is 126.99115 g

6 0
3 years ago
Read 2 more answers
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