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Recent questions tagged q93

A jet airplane is travelling at $200 m/s$ The engine takes in $100\;m^3$ of air having mass $100 \;kg$ each second. The air is used to burn 5 kg fuel each second. The energy is used to compress the products of combustion and to eject them at the rear of the plane at $500 m/s$ relative to the plane. The thrust of the engine is

asked Aug 8, 2013 by meena.p

1 answer

A car of 1000 kg with velocity 18 km/hr is stopped by brake of 1000 N. distance covered by it before stopping is

asked Jul 15, 2013 by meena.p

1 answer

The degree of the differential equation $\;\Large c=\frac{\left[1+\left(\frac{dy}{dx}\right)^{3}\right]^{2/3}}{\frac{d^{3}y}{dx^{3}}}$ where $c$ is a constant

asked May 23, 2013 by poojasapani_1

1 answer

The line $ 2x+3y+9=0$ touches the parabola $y^{2}=8x$ at the point

asked May 13, 2013 by poojasapani_1

1 answer

Evaluate:$\int\limits_0^1 x\sqrt{\large\frac{1-x^2}{1+x^2}}$$dx$

asked Feb 4, 2013 by meena.p

1 answer

Find the intervals in which f(x) = logcosx is strictly decreasing and strictly increasing.

asked Jan 30, 2013 by meena.p

1 answer

A box has 100 pens of which 10 are defective.What is the probability that out of sample of 5 pens drawn one by one with replacement at most one is defective?

asked Jan 10, 2013 by sreemathi.v

1 answer

The derivative of $\cos^{-1}(2x^2-1)$ w.r.t $\cos^{-1}x$ is

asked Jan 3, 2013 by sreemathi.v

1 answer

True or False: If A and B are two square matrices of the same order , then AB = BA.

asked Dec 24, 2012 by sreemathi.v

1 answer

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