THE WORK DONE BY THE GRAM PANCHAYAT AND THE ACCOUNTS OF EXPENDITURE CAN BE REVIWED BY

Answer:

The human excretory system functions to remove waste from the body through the skin as sweat, the lungs in the form of exhaled carbon dioxide, and through the urinary system in the form of urine. All three of these systems participate in osmoregulation and waste removal.

Answer:

• Osmoregulation is the control of water levels and mineral ions in the blood. Water levels and mineral ions in the blood are controlled to keep the concentrations the same inside the cells as around them. This protects cells by stopping too much water from entering or leaving them by osmosis.
• Mammals use thermoregulation to keep the body within a tight temperature range. This is essential for health, as it allows organs and bodily processes to work effectively. If a person's body temperature strays too far from 37°C, they can develop hyperthermia or hypothermia.
• Through excretion organisms control osmotic pressure—the balance between inorganic ions and water—and maintain acid-base balance.

Explanation:

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Class 11

>>Physics

>>Systems of Particles and Rotational Motion

>>Linear Momentum of a System of Particles

>>A trolley of mass 300 kg carrying a sand

Question

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A trolley of mass 300 kg carrying a sandbag of 25 kg is moving uniformly with a speed of 27 km/h on a frictionless track. After a while, sand starts leaking out of a hole on the floor of the trolley at the rate of 0.05 kg s

−1

. What is the speed of the trolley after the entire sand bag is empty ?

Medium

Solution

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Verified by Toppr

Since the hole is on the floor , that means sand is falling vertically with respect to trolley. Therefore there is no force in horizontal direction hence in horizontal direction momentum is conserved.

Let M= mass of trolley

m= mass of sandbag

v

1

= initial velocity

v

2

= final velocity ( to be found)

Then P

1

=(M+m)v

1

when the sand bag is empty the momentum is

P

2

=(M+0)v

2

Momentum is conserved in horizontal direction so

P

1

=P

2

⇒=v

2

=

M

(M+m)

v

1

=

300

300+25

×27×

18

5

=8.215m/s

Answer:

Answer is -64

Hope it helps you

Note : (-) × (+) = (-)

Any doubts ? message me on i n s t a ab_koorse

Explanation:

12+(−7)+36+(−32)+(−49)

hru??

Answer:

hdyduueueueueuueeiwiwiwiwiiwie

Step-by-step explanation:

as large negative no is consider as the smaller