Answer:
-In the isothermal process, temperature is kept constant so change in temperature when work is done on the system is zero. The internal energy of the system depends on temperature. So, $\Delta U=0$.
Explanation:
Answer:
Therefore, the distance between object and image is given by the distance between object and mirror + distance between mirror and image = 0.5 m + 0.5 m = 1 m. 4. You are provided with a concave mirror, a convex mirror, a concave lens and a convex lens. To obtain an enlarged image of an object you can use either (a) concave mirror or convex mirror.
Explanation:
Answer:
2.45 m/s
Explanation:
From the law of conservation of momentum,
The total momentum before the grab = Total momentum after the grab.
mu+m'u' = V(m+m')................... Equation 1
Where m = mass of Erica, m' = mass of Danny, u = initial velocity of Erica, u' = initial velocity of Danny, V = common velocity after garb
Make V the subject of the equation
V = (mu+m'u')/(m+m')............. Equation 2
Given: m = 37 kg, m' = 49 kg, u = 0 m/s(at the maximum height), u' = 4.3 m/s
Substitute into equation 2
V = (37×0+49×4.3)/(37+49)
V = 210.7/86
V = 2.45 m/s
Hence their speed just after the grab = 2.45 m/s
Answer:
a) 200J b) 200J c) -100J d) -300J
Explanation:
Formula for Potential energy where w (10 N) is weight of the camera and h is position with respect to the reference point.
(a) When ground being zero, then while
At drone:
On ground:
(b) When drone being zero, then while
At drone:
On ground:
When the point of zero gravitational potential energy is at a person 30m from the ground then while and
(c) Before falling from drone:
(d) After landing on ground:
If the radius of the cylinder is halved and length is kept unchanged then the density of air inside the cylinder will increase.
As it can be said that density is inversely proportion to the square of the radius.
Density of Cylinder
Density is the ratio of mass to volume.
The formula for density is: ρ= m/v.
The formula for the Mean Density of a cylinder is:
ρ= m/ (π•r²•h)
where:
ρ is the density of the cylinder
m is the mass of the cylinder
h is the height of the cylinder
So, with increase in radius the of the cylinder there is decrease in the density of cylinder.
And on decreasing the radius of the cylinder there is increase in the density of the cylinder.
As it can be said that density is inversely proportion to the square of the radius.
To learn more about Density Of Cylinder
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