Lew , który podczas pościgu potrafi w czasie 5 sekund osiągnął prędkość końcową 15m/s. a) Oblicz przyspieszenie Lwa.

b) Narysuj wykres a(t), zapisz odpowiednie obliczenia i narysuj i uzupełnij odpowiednią tabelę.

c) Narysuj wykres V(t), zapisz odpowiednie obliczenia i narysuj i uzupełnij odpowiednią tabelę.

d) Narysuj wykres S(t), zapisz odpowiednie obliczenia i narysuj i uzupełnij odpowiednią tabelę.

Daję naj

True or false graphs must include scales that increase by the same amount

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples

The heater element of a 120 v toaster is a 5.4 m length of nichrome wire, whose diameter is 0.48 mm. the resistivity of nichrome at the operating temperature of the toaster is 1.3 × 10-6 ω·m. the toaster is operated at a voltage of 120 v. (a) what is the power drawn by the toaster? (b) if the cost of electricity is 12 ¢ per kilowatt-hour, and it takes 2 minutes to toast bread, how much does it cost for toasted bread? (c) when the heater element is at room temperature, is the resistivity in the nichrome wire greater than, less than, or equal to it’s resistivity when at operating temperature? explain.