Assertion : Breathing slows down under resting stage
Reason : Rate of breathing rises on vigorous exercise
A) Both A and R are true
B) ,A is true, R is false
C) A is false, R is true
D) Both A and R are false
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Living things also give off water into the atmosphere through their breathing process is called
B) Transpiration
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A bullet hits and gets embedded in a solid block resting on a horizontal frictionless table. What is conserved?
Correct option is: (A) Momentum alone. When a bullet gets embbed in a solid block the whole kinetic energy gets lost . This will be perfectly inelastic c ol lision in which...
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A bullet hits and gets embedded in a solid block resting on a horizontal frictionless table. What is conserved?
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Calculate the force required to move a block of mass 20 kg resting on a horizontal surface, if μs = 0.3 and g = 9.8 m/s^2.
Given: m = 20 kg, μS = 0.3, g = 9.8 m/s2 To find: Force required (F) Formula: FS = μSN = μSmg Calculation: From formula, FS = 3 × 20 × 9.8 = 58.8N The force required to move...
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A block of mass 40 kg resting on a horizontal surface just begins to slide when a horizontal force of 120 N is applied to it.
Given: FL = 120N, Fk = 80N, m = 40 kg, g = 9.8 m/s2 To find: i. Coefficient of static friction (μS) ii. Coefficient of kinetic friction (μk) Formulae: i. μs = \(\frac{F_L}{N}\) ii. μk = \(\frac{F_K}{N}\) Calculation: From formula (i) we get. N =...
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Statement I : The rate of evaporation slows down as the water vapour increases in the air
option c is correct
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Find the reason for slow breathing in walking compared to running fast
D) Variation in contraction and relaxation of lungs at rest and run fast
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A person is hiking on a mountain. His breathing rate is increasing while he is walking up hill.
Answer is (B) 1 and 2
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The reading of pressure is taken during the resting period as the ventricles refill with blood
C) Diastolic pressure
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Arrange the stages in a correct order 1. S stage 2. G stage 3. M stage 4. G stage
(A) 4, 1, 2, 3
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