Answer:
A. 4.47 m/s
Explanation:
As the ball oscillates, it mechanical energy, aka the total kinetic and elastics energy stays the same. For the ball to be at maximum speed, its elastic energy i 0 and vice versa. When the ball is at rest, its kinetic energy is 0 and its elastic energy is at maximum at 50 cm, or 0.5 m
1500 g = 1.5 kg
Answer:
= 5.74W
=0.27 W
Explanation:
d= 2.6cm =>0.026m (for both the ceramic and the carpet )
Thermal conductivity of wool ''=
=
= 0.04J/(sm °C)
Thermal conducticity of carpet '' = 0.84 J/(sm °C)
Area 'A'= =
= 77.2cm²=> 77.2 x
m²
=33.0°C
=10.0°C
Average Power is determined by dividing amount of energy'Q' by time taken for the transfer't':
= Q/Δt
Due to conductivity, heat of flow rate will be P= dQ/dt
P= =
For CERAMIC:
=
=> [0.84 x 77.2 x
(33-10) ]/0.026
= 5.74W
For WOOL CARPET:
=
=> [0.04 x 77.2 x
(33-10) ]/0.026
=0.27 W