because the oceans already have a ton of water in them so they don't really need to absorb the water again that evaporates
Answer:
Two or more elements make up a compound.
Explanation:
B)the smallest unit of p4
C)the smallest unit of NH3
D)the smallest unit of H2O
Benefits of friction.
1. Walking. Friction between the soles of our shoes and the ground enables us to walk. The sole of the shoe is held to the ground through friction. This is what is termed as "grip" of the shoe. The more grip a shoes offers, the better and faster we can walk.
2. Writing. Writing using a pen requires friction. It is impossible to hold a pen in the hand without friction because it would slip out. Also the graphite point of the pencil would not make a mark on the paper without friction.
Drawbacks of friction
1. Drag. An aircraft taking off experiences significant friction between it and the air resulting in drag, so much fuel has to be used to create energy to overcome the wind resistance.
2. Surface hindrance. Friction makes moving something heavy from one part of a room to another very difficult. Sliding a large box across the flour takes a lot of energy due to friction between the box and the floor.
Answer:
207.50°C
Explanation:
Mass of metal (M1) = 440g
Volume of water = 400mL
Initial temperature of water (T2) = 20°C
Final temperature of the mixture (T3) = 35.80°C
Specific heat capacity of the metal (C1) = 0.3850J/g°C
Specific heat capacity of water = 4.184J/g°C
Density of water = 1g/mL
Temperature of metal (T1) = ?
Heat lost by the metal = Heat gained by the water
Q = MC∇T
Q = heat energy
M = Mass
C = specific heat capacity
∇T = change in temperature
M1C1(T1 - T3) = M2C2(T3 - T2)
M2 = ?
Density = mass / volume
Mass = density * volume
Mass = 1g/mL * 400mL
Mass = 400g
M1C1(T1 - T3) = M2C2(T3 - T2)
400 * 0.3850 (T1 - 35.80) = 400 * 4.184 * (35.80 - 20)
154(T1 - 35.80) = 1673.6 * (15.8)
154T1 - 5513.2 = 26442.88
154T1 = 26442.88 + 5513.2
154T1 = 31956.08
T1 = 31956.08 / 154
T1 = 207.50
The initial temperature of the metal was 207.50°C