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Answer:
When dealing with the force of gravity between two objects, there are only two things that are important –<u> mass, and distance</u>. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.
Explanation:
Answer:
The specific heat of the unknown substance is 1.22 J/g.°C.
Explanation:
Heat lost by substance (Qc) = Heat gained by the water (Qw)
,
<em>- (Qc) = (Qw).</em>
<em></em>
- We can calculate the amount of heat (Qw) gained by water using the relation:
Qw = m.c.ΔT,
where, Qw is the amount of heat released to water (Q = ??? J).
m is the mass of water (m = 110.0 g).
c is the specific heat capacity of solution (c = 4.18 J/g.°C).
ΔT is the difference in T (ΔT = final temperature - initial temperature = 32.4°C - 24.2°C = 8.2°C).
<em>∴ Q = m.c.ΔT = </em>(110.0 g)(4.18 J/g.°C)(8.2°C) = <em>3770.36 J.</em>
- Now, the amount of heat lost by the substance <em>(Qc) = - 3770.36 J.</em>
(Qc) = m.c.ΔT,
where, Qc is the amount of heat lost by substance (Qc = - 3770.36 J).
m is the mass of water (m = 42.5 g).
c is the specific heat capacity of solution (c = ??? J/g.°C).
ΔT is the difference in T (ΔT = final temperature - initial temperature = 32.4°C - 105.0°C = -72.6°C).
∴ (- 3770.36 J) = (42.5 g)(c)(-72.6°C).
∴ c = (- 3770.36 J)/(42.5 g)(-72.6°C) = 1.222 J/g.°C.
Explanation:
When we have direct sunlight, the temperature is higher compared to indirect sunlight.
Direct sunlight is usually overhead whereas indirect sunlight is at an angle to the surface.
- Direct sunlight impacts the surface with more energy concentrated on a smaller surface area.
- This warms the surface more.
- Indirect sunlight is diffuse and spreads over a wider area.
- This leads to a reduction in temperature.