Question and Answers Forum

OthersQuestion and Answers: Page 20

Question Number 183135 Answers: 1 Comments: 0

Question Number 183039 Answers: 1 Comments: 0

A Golfer practising on a range with an accelerated tree 4.9m above the fairway is able to strike a ball so that it leaves the club with a horizontal velocity of 20m/s. (Assume the acceleration due to gravity is 9.8m/s^2 and the effect of air resistance maybe ignored unless othewise stated 1) How long after the ball leaves the club will it land on the fairway? 2) What horizontal distance will the ball travel before striking the fairway? 3) What is the acceleration of the ball 0.5s after being hit? 4) Calculate the speed of the ball 0.8s after it leaves the club? M.m

Question Number 183038 Answers: 1 Comments: 0

Solve (dy/dx)+xy=x^2 M.m

$$\mathrm{Solve} \\ $$$$\frac{\mathrm{dy}}{\mathrm{dx}}+\mathrm{xy}=\mathrm{x}^{\mathrm{2}} \\ $$$$ \\ $$$$\mathrm{M}.\mathrm{m} \\ $$

Question Number 183036 Answers: 1 Comments: 0

A bullet of mass 1kg is fired and get embedded into a block of wood of mass 1kg initially at rest the velocity of the bullet before collision is 90m/s 1) What is the velocity of the system after collision? 2) Calculate the kinetic energy before and after the collision. 3)How much energy is lost in collision?

$$\mathrm{A}\:\mathrm{bullet}\:\mathrm{of}\:\mathrm{mass}\:\mathrm{1kg}\:\mathrm{is}\:\mathrm{fired}\:\mathrm{and}\:\mathrm{get} \\ $$$$\mathrm{embedded}\:\mathrm{into}\:\mathrm{a}\:\mathrm{block}\:\mathrm{of}\:\mathrm{wood}\:\mathrm{of} \\ $$$$\mathrm{mass}\:\mathrm{1kg}\:\mathrm{initially}\:\mathrm{at}\:\mathrm{rest}\:\mathrm{the}\:\mathrm{velocity} \\ $$$$\mathrm{of}\:\mathrm{the}\:\mathrm{bullet}\:\mathrm{before}\:\mathrm{collision}\:\mathrm{is}\:\mathrm{90m}/\mathrm{s} \\ $$$$\left.\mathrm{1}\right)\:\mathrm{What}\:\mathrm{is}\:\mathrm{the}\:\mathrm{velocity}\:\mathrm{of}\:\mathrm{the}\:\mathrm{system} \\ $$$$\mathrm{after}\:\mathrm{collision}? \\ $$$$\left.\mathrm{2}\right)\:\mathrm{Calculate}\:\mathrm{the}\:\mathrm{kinetic}\:\mathrm{energy}\:\mathrm{before} \\ $$$$\mathrm{and}\:\mathrm{after}\:\mathrm{the}\:\mathrm{collision}. \\ $$$$\left.\mathrm{3}\right)\mathrm{How}\:\mathrm{much}\:\mathrm{energy}\:\mathrm{is}\:\mathrm{lost}\:\mathrm{in}\:\mathrm{collision}? \\ $$

Question Number 182984 Answers: 2 Comments: 0

Find the equation for the plane through the point A(6, 2, −4), B(−2, 4, 8), C(4, −2, 2). −Vector Analysis M.m

$$\mathrm{Find}\:\mathrm{the}\:\mathrm{equation}\:\mathrm{for}\:\mathrm{the}\:\mathrm{plane} \\ $$$$\mathrm{through}\:\mathrm{the}\:\mathrm{point}\:\mathrm{A}\left(\mathrm{6},\:\mathrm{2},\:−\mathrm{4}\right), \\ $$$$\mathrm{B}\left(−\mathrm{2},\:\mathrm{4},\:\mathrm{8}\right),\:\mathrm{C}\left(\mathrm{4},\:−\mathrm{2},\:\mathrm{2}\right).\:−\mathrm{Vector}\:\mathrm{Analysis} \\ $$$$ \\ $$$$\mathrm{M}.\mathrm{m} \\ $$

Question Number 182941 Answers: 0 Comments: 0

Solve: [x^2 +(xy^2 )^(1/3) ](dy/dx)=y M.m

$$\mathrm{Solve}: \\ $$$$\left[\mathrm{x}^{\mathrm{2}} +\left(\mathrm{xy}^{\mathrm{2}} \right)^{\frac{\mathrm{1}}{\mathrm{3}}} \right]\frac{\mathrm{dy}}{\mathrm{dx}}=\mathrm{y} \\ $$$$ \\ $$$$ \\ $$$$\mathrm{M}.\mathrm{m} \\ $$

Question Number 182934 Answers: 1 Comments: 0

Is that right ! IF : Σ_(k = 1) ^n (⌊(n/k)⌋−⌊((n−1)/k)⌋) = 2 so n is a prime number .

$$\:\:\:\:\:\:\:\:{Is}\:{that}\:{right}\:! \\ $$$$\:\:\:\:{IF}\:\::\: \\ $$$$\underset{{k}\:=\:\mathrm{1}} {\overset{{n}} {\sum}}\:\left(\lfloor\frac{{n}}{{k}}\rfloor−\lfloor\frac{{n}−\mathrm{1}}{{k}}\rfloor\right)\:=\:\mathrm{2} \\ $$$$\:\:\:{so}\:{n}\:{is}\:{a}\:{prime}\:{number}\:. \\ $$

Question Number 182810 Answers: 2 Comments: 0

What is the value of this infinite sum ((1/2)−(1/3))+((1/2^2 )−(1/3^2 ))+((1/2^3 )−(1/3^3 ))+...

$$\mathrm{What}\:\mathrm{is}\:\mathrm{the}\:\mathrm{value}\:\mathrm{of}\:\mathrm{this}\:\mathrm{infinite}\:\mathrm{sum} \\ $$$$\left(\frac{\mathrm{1}}{\mathrm{2}}−\frac{\mathrm{1}}{\mathrm{3}}\right)+\left(\frac{\mathrm{1}}{\mathrm{2}^{\mathrm{2}} }−\frac{\mathrm{1}}{\mathrm{3}^{\mathrm{2}} }\right)+\left(\frac{\mathrm{1}}{\mathrm{2}^{\mathrm{3}} }−\frac{\mathrm{1}}{\mathrm{3}^{\mathrm{3}} }\right)+... \\ $$$$ \\ $$$$ \\ $$

Question Number 182803 Answers: 0 Comments: 0

write an 8085 mp assembly language program to separate even numbers from a list of 10 numbers and store them in another list starting from (2300H). assume starting address of 10 numbers list is (2200H).

$${write}\:{an}\:\mathrm{8085}\:{mp}\:{assembly}\:{language}\:{program} \\ $$$${to}\:{separate}\:{even}\:{numbers}\:{from}\:{a}\:{list}\:{of} \\ $$$$\mathrm{10}\:{numbers}\:{and}\:{store}\:{them}\:{in}\:{another} \\ $$$${list}\:{starting}\:{from}\:\left(\mathrm{2300}{H}\right).\:{assume}\:{starting} \\ $$$${address}\:{of}\:\mathrm{10}\:{numbers}\:{list}\:{is}\:\left(\mathrm{2200}{H}\right). \\ $$

Question Number 182779 Answers: 4 Comments: 1