vacuum walls: prevents heat loss by comduction and radiation
silvered walls prevent loss by radiation
ceramic base prevents loss by conduction
cap prevents by radiation and convection and reduces by comduction
acceleration due to gravity is always 9.8 m/s/s (on earth)
Change in thermal energy = mass × specific heat capacity × change in temperature.
Answer: you would need to know the mass of each mug
Answer:
36 km /h means 10 m/s. Increase in speed is 10m/s in 5 s . Acceleration is ( 10/5 ) = 2 m/s^ 2.
Answer:2200 hz
Explanation:
speed=242m/s
Distance between crest is there wavelength=0.11m
Frequency=speed ➗ wavelength
Frequency=242 ➗ 0.11
Frequency=2200
Frequency=2200 hz
