100 কেজি ওজনের একটি গাড়ি `5m//sec` বেগে চলছে। `(1)/(10)` সেকেন্ডের মধ্যে এটি বন্ধ করতে

A vehicle of 100 kg is moving with a velocity of 5m//sec . To stop it in (1)/(10) sec , the required force in opposite direction is

Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations: a. 60 mL (M)/(10) HCl + 40 mL (M)/(10) NaOH b. 55 mL (M)/(10) HCl + 45 mL (M)/(10) NaOH c.75 mL (M)/(5) HCl + 25 mL (M)/(5) NaOH d. 100 mL (M)/(10) HCl + 100 mL (M)/(10) NaOH pH of which one of them will be equal to 1 ?

The molecules of a given mass of gas have a rms velocity of 200 m//sec at 127^(@)C and 1.0 xx 10^(5) N//m^(2) pressure. When the temperature is 127^(@)C and pressure is 0.5 xx 10^(5) N//m^(2) the rms velocity in m//sec will be

A 1.00 xx 10^(-20) kgparticle is vibrating with simple harmonic motion with a period of 1.00 xx 10^(-5) sec and a maximum speed of 1.00xx10^(3) m/s . The maximum displacement of the particle is

v = 5 m s^(-1) W = mg = 100 N m = 10 kg Kinetic energy ??

A semiconductor has an electron concentration of 8xx10^(13) per cm^(3) and a hole concentration of 5xx10^(12) per cm^(3) . The electron mobilityis 25,000 cm^(2)V^(-1)sec^(-1) and the hole mobility is 100cm^(2)V^(-1)sec^(-1) and the hole mobility is 100cm^(2)V^(-1)sec^(-1) (i) The semiconductor is n -type (ii) the semiconductor is p -type (iii) the conductivity is 320m mho cm^(-1) (iv) the conductivity is 80m mho cm^(-1)