Distance travelled by the car between t = 3s to t = 4s during constant acceleration from rest

Answer: Option A

Distance travelled by the car between t = 3s to t = 4s during constant acceleration from rest https://youtu.be/M8MySD2pvzw

Find the density of liquid from a pressure-depth graph.

Liquid pressure P = pgh

P is pressure in pascal (Pa)

p is the density of the liquid (kg/m3)

g is gravitational field strength (10 N/kg)

h is the height of the liquid (m)

Answer: Option B

Refer to the video explanation

Find the density of liquid from a pressure-depth graph. https://youtu.be/I02mcUJ_tyE

What is the numerical value of ratio of c/C？PP2020P1Q20

C is the heat capacity of a body. It is the amount of internal energy transferred to a body per unit change in temperature. (Or for 1 degree Celcius change in temperature). SI unit : J/oC

c is the specific heat capacity of a material. It is the amount of internal energy transferred to a unit mass of the material per unit change in temperature. SI unit: J/kg.oC

The relationship between C and c is:

C = mc where m is the mass of the substance

Answer: Option C

What is the numerical value of ratio of c/C？PP2020P1Q20 https://youtu.be/BC4m-oJ9yy4