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A hill that has a 12.0% grade is one that rises 12.0 m vertically for every 100.0 m of distance in the horizontal direction. At what angle is such hill inclined above the horizontal

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0.7. A transverse wave produced on a spring has a frequency of 190 Hz and travels along the length of the spring of 90 m, in 0.5 s.

(a) What is the period of the wave?

(b) What is the speed of the wave?

(c) What is the wavelength of the wave?

(a) What is the period of the wave?

(b) What is the speed of the wave?

(c) What is the wavelength of the wave?

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A ball of mass 10Kg is initially moving with a velocity of 50

m/s. On applying a constant force on ball for 2s,it acquires

a velocity of 70m/s. Calculate:

a) The initial momentum of the ball

b) The final momentum of the ball

c) The rate of change of momentum

d) The acceleration of the ball

e) The magnitude of the force applied

m/s. On applying a constant force on ball for 2s,it acquires

a velocity of 70m/s. Calculate:

a) The initial momentum of the ball

b) The final momentum of the ball

c) The rate of change of momentum

d) The acceleration of the ball

e) The magnitude of the force applied

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Two small glass spheres of masses 10g and 20g are moving in a straight line in the same direction with velocities of 3m/s and 2m/s respectively. They collide with each other and after collision, glass sphere of mass 10g moves with a velocity of 2.5m/s.

Find the velocity of the second ball after collision

Find the velocity of the second ball after collision

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A revolver of mass 500g fires a bullet of mass 10g with a speed of 100m/s. Find:

(i) Momentum of the bullet,

(ii) Initial momentum of revolver and bullet as a system

(iii) Recoil velocity of the revolver.

(i) Momentum of the bullet,

(ii) Initial momentum of revolver and bullet as a system

(iii) Recoil velocity of the revolver.

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A truck is moving with a velocity of 20m/s. The mass of truck is 100Kg.An apple of mass 0.2Kg is moving with a velocity of 5m/s. The apple falls on the trolley. What is the final velocity of apple-truck together?

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If n balls hit elasticity and normally on the surface per unit time and all balls of mass m are moving with same velocity u, then force on surface is

(1) mun

(2) 2mun

(3) 1/2mu^2n

(4) mu^2n

(1) mun

(2) 2mun

(3) 1/2mu^2n

(4) mu^2n

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Jim is driving his car at 32 m/s (72 mi/h) along a highway where the speed limit is 25 m/s (55 mi/h). A highway patrol car observes him pass and quickly reaches a speed of 35 m/s. At that point, Jim is 250 m ahead of the patrol car.

How far does the patrol car travel before catching Jim?

How far does the patrol car travel before catching Jim?

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At sea level, the atmospheric pressure is 76 cm of hg. If air pressure falls by 10mm of hg per 120m of ascent, what is the height of a hill where the barometer reads 70 cm hg.

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waves transmits from one place to another a:energy, b:amplitude c:mass d:wavelength

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