An electric heater draws a steady 16.0 a current in a circuit with a 120 v power supply. it operates 4.0 h per day for a month (30 days). the electric company charges 10.0 cents per kwh. (i) calculate the power consumed by the heater in watts. (ii) calculate the energy in kwh consumed by the heater in one month. (iii) calculate the total dollar amount charged monthly by the electric company cost

As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?