Physics, 30.10.2020 06:20, barbiegirllover
Which describes the concrete operational stage of Piaget’s theory of cognitive development?
PLZ. HELP THIS POOR CHILD
A. lasts from about the age of seven to eleven, when a child is able to reason using logic
B. lasts from ages two to six, and the child is able to reason through intuition
C. lasts from birth to two years old, when infants build on reflexes and come to know the world around them through direct sensory and motor contact
D. lasts from eleven years to adulthood and signals when the child uses formal rules of logic in her thinking
Answers: 2
Physics, 22.06.2019 11:50, azertyqwerty123
Two resistors r1 and r2 may be connected either in series or parallel across an ideal battery with emf ε. we desire the rate of energy dissipation of the parallel combination to be 8.75 times that of the series combination. if r1 = 105 ω, what are the (a) smaller and (b) larger of the two values of r2 that result in that dissipation rate?
Answers: 2
Physics, 22.06.2019 12:30, lmolder1329
Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.
Answers: 1
Physics, 22.06.2019 19:00, marxusalexander4069
Why do different substances have diffrent properties
Answers: 1
Which describes the concrete operational stage of Piaget’s theory of cognitive development?
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