Recent content by Shivansh Mathur

Homework Statement Two vectors of magnitude 5 units and 3 units are added such that the angle between the resultant and the vector of magnitude 5units is maximum. Find this angle. Homework EquationsThe Attempt at a Solution Knowing that the resultant vector makes a smaller angle with a...

Volume of cone = 1/3π r2h r=5 cm. h = 10 cm r= h/2 1/3π (h2/4) h πh3/12 dv/dt = 1.5 dh/dt = ? dv/dt = dh/dt * dv/dh 1.5 = dh/dt * πh2/4 dh/dt = 6/πh2 Now putting h=4, I got the answer 3/(8π)

Ok, so what I've done is this - In the ques. h=2r or r=h/2 So the formula for volume of cone is written in terms of 'h'. Now, dv/dt = 1.5 (given) And dv/dh is calculated. Then after applying chain rule, dh/dt comes out to be 3/8π Now could you please tell me if I'm right? Thanks

Homework Statement An inverted cone has a depth of 10cm and a base radius of 5cm. Water is poured into it at the rate of 1.5 cm^3/ min. Find the rate at which level of water in the cone is rising, when the depth of water is 4cm. Homework EquationsThe Attempt at a Solution [/B] I know that...

Yes I've looked for myself Rayleigh scattering..is that all to it? Even when one sees it from 'space'.

suppose there is an astronaut sitting in a space station orbiting Earth, what colour would the sky appear to him? Same as us? Why or why not? Thanks!

I've learned how to know the direction of force on a current carrying conductor when placed in a magnetic field.( Fleming's left hand rule) Is there a similar rule to calculate the force in this case? Or should the force be 0 since the wires are perpendicular to each other? In general, how to...

Yeah. Thanks

Find the force on 2Q and -Q/22. Force between two point charges is given by : F = k.q1.q2 / d[2][/SUP]The Attempt at a Solution To find the force on 2q, I added the charges on left side and then calculated it using the formula. But how do we do it for -Q/2. Please guide me. Thanks

Population 1 stars are young, hot and more luminious, so when a star is young, fusion of hydrogen is taking place inside it's core. Why then Population 1 stars are called metal rich and Population 2 stars 'matal poor'? Why shouldn't it be the reverse?

Thanks. Actually i thought on the same line but got confused.

yeah so you mean that we will be traveling at the same rate as the ball does, and we won't see it falling down. Then connecting it to the original question says that the flow of water will stop?

yes it will drop.

When a hole is made in the side of the container holding water, water flows out and follows a parabolic trajectory. If the container is dropped in free fall, what will happen to the water flow? I think that the water flow will follow a similar trajectory..what effect can gravity have on it? it...

no no! that arrow i have just drawn to label, it's not the direction of the vector.