Question

1.) How much heat does 25 grams of substance C give off as it cools from 100°C to 20°C? The specific heat capacity of the substance is 0.22 J/g°C.

2.) How much heat is needed to raise the temperature of 80 grams of substance B from 15°C to 78°C. The specific heat capacity of the substance is 0.60 J/g°C.

3.) It takes 1050 J to raise the temperature of 41 grams of substance E from 35°C to 65°C. What is the specific heat of the substance?

4.) A 0.50-A current is measured through a light bulb connected across the terminals of a 250-Ω. At what rate does the bulb convert electric energy to light?

5.)If the resistance in an electric appliance is 50 ohms and the voltage across it is 6-V, how much current will be able to flow?

6.) What is the specific heat of 25 grams of substance D if it takes 400 J to heat from 21°C to 53°C?

7.) A lamp draws a current of 0.75-A when it is connected to a 220-V. What is the power consumption of the lamp?

8.) The specific heat of aluminum is 900 J/g°C. How much heat is needed to change the temperature of 3 grams of aluminum from 25°C to 35°C?

9.) How much power is generated by the bulb if it is connected to a 10 volts source and the current flowing is 3-A.

10.) How much voltage are there if the current through a 30-ohm resistor is measured to be 0.70-A?

Answer 1

Answer:

hiii good morning brooo

Answer 2

Answer:

hey friend

good evening