A heat engine operates at 250 cycles per minute. In each cycle, 50.0 joules of heat enter the engine from the hot reservoir. The actual efficiency of the engine is 30.0%. Calculate the power output of the engine in watts.

ι вєℓιєνє ιт ιѕ тнє fιяѕт ¢нσι¢є(α.)

нє ѕнσυℓ∂ ѕмιℓє ρσℓιтℓу αи∂ ѕρєαк тσ тнє ρєяѕσи ωнσ ιѕ ιитєяяυριиg αfтєя тнє ∂ιѕ¢υѕѕισи

нσρє ι ¢συℓ∂ нєℓρ.

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it

answer///scientific method;