vrybascos

28.09.2019 • 

Physics

A1 uf parallel-plate capacitor is charged to 12 v and then disconnected from the voltage supply. the plate separation distance is doubled and the dielectric is replaced by a material with another that has one quarter of the former relative permittivity. find the final charge on the capacitor's positive plate and the final voltage difference between its terminals. 2. a parallel-plate capacitor consists of two equally thick layers of dielectric sandwiched between 1 cm x 2 cm rectangular plates that are separated by 200 um. one layer of dielectric has permittivity of 5 uf/m. the other has twice that value. find the energy stored in the capacitor when its leads are connected to a 60 v supply.

Ответ:

aris35

15.05.2021

Physics

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The final velocity of the car is 36 m/s.

Explanation:

Given;

initial velocity of the car, u = 20 m/s

time of the car acceleration, t = 4 s

acceleration of the car, a = 4 m/s²

the final velocity of the car is calculated as;

v = u + at

where;

v is the final velocity of the car

v = 20 + (4 x 4)

v = 36 m/s

Therefore, the final velocity of the car is 36 m/s.

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