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Solution a empty glass test tube is floted vertically in water depth 5 cm. Now on introducing a8cm liquid column in the tube its depth water is furthe increase by 4 cm now if the empty test tube is allow to float vertically in liquid 5cm of the tube is seen in air, find the total length of the tube
A parallel beam of light is incident normally on a plane surface absorbing 40% of the light and reflecting the rest . If the incident beam carries 10W of power , find the force exerted by it on the surface .
"A UNIFORM TOY OF CONSTANT DENSITY IS MADE BY MOUNTING A CONE OF HEIGHT H AND RADIUS R ON A HEMISPHERE OF RADIUS R.FIND RATIO H/R IF CENTER OF MASS OF TOYIS TO TOY IS TO LIE AT THE CENTER OF COMMON BASE."
What is the vertical velocity of a cannon ball launched at ground level after it has achieved a height of 1.3 meters off the ground? (exit velocity of the cannon ball is 200 meters per second at an angle of 45 degrees)
A galvanometer of resistance 'G' is connected with the a shunt of resistance 'S' .A resistance of 'R' is connected in series with galvanometer such that main current in the circuit remains same.Find the value of 'R' ?

I need to know how to show the change in the range of a projectile when accounting for the rotation of the earth, I have

D = R2 - R,

R2 = (1/3)*w(t^3)gcos(k) - w*(t^2)*V*sin(a)*cos(k) + Vcos(a)*t

R = 2(V^2)(sin(a)^2)/g

t= (2*V*sin(a))/g

I know what D is but not how to get there,

D = ((2(R^3)/g)^(1/2))*wcos(k)[(cot(a)^(1/2)) - 1/3*f(a)]

f(a) is a function of a, it is known to be tan(a)^3/2 but the question is initially phrased this way.
No matter how tightly we pull the clothsline it always sags in the middle.Why?

Thank You
A car starts from rest and rolls down a hill. The height of the hill is .3 km and the distance travelled by the car is 4.8 km. What is the acceleration?
A car goes at a constant 16 m/s up a hill. the frictional force is 500N. The height of the hill is .3 km and it the car travels a distance of 4.8 km. What is the work done in order to get to the top of the hill.?

What is the gravitational force that the sun exerts on the earth? The mass of the earth is 5.98*10^24 and the suns mass is 1.99*10^30. The earth-sun distance is 1.50*10^11 meters. Show Your work!!!!