Answer:
4.3 m/sec
Explanation:
Here height of cliff = y = 37.6 m
Gravitational acceleration = g = 9.8 m/sec2
vi = 0 m/s
Let's find the time which the diver will take if jumps from there!
Using formula
y = vit+1/2gt2
==> 37.6= 0 + 0.5 ×9.8×
==>=
==> t = 2.8 sec
In this time the diver has to cover a horizontal distance of 12.12 m
If x = 12.12 m is the horizontal distance to be covered then using
x= Vx × t
==> Vx = x/t
==> Vx= 12.12/2.8 = 4.3 m/s
Answer:1
Explanation:
Let the heat given by flame be .
Let be the mass of water in case 1.
Let be the mass of water in case 2.
Let Δ be the temperature difference in case 1.
Let Δ be the temperature difference in case 2.
Let be the volume of water in case 1.
Let be the volume of water in case 2.
Let be the density of water.
Let be the specific heat of water.
Given,
Δ
Since the same heat is given to water in both the cases,
Δ
Δ
So,Δ=Δ
Since mass is product of volume an density,
Δ=Δ
Δ
So,Δ