Mota

This page lists questions and answers that were posted by visitors named Mota.

Questions

The following questions were asked by visitors named Mota.

Melons cost QR1.5 each and apples cost QR3.75 per kilogram. A man buys apples and melons at the supermarket. Write a formula to describe the total cost of his purchase. Investigate how many melons and how many kilograms of apples he could buy for QR30. **...

Rationalise the expression 1/(ã2 + ã3).

Draw a diagram to represent the identity (a + b)2 = a2 + 2ab + b2.

Use Pascal’s triangle to read off the coefficients of the powers of x in the expansion of (1 + x)n for different values of the positive integer n. Check the results for n = 3 by expanding (1 + x)3.

can you please gave me 3 argument with there evedence about useing a cell phone while driving .. thank u ..

3ã2+(ã2)^3 i don't know how to add them ??

If a force of 300N is exerted upon a 60 kg mass for 4 seconds, how much impulse does the mass experience?

A billiard ball approaches a cushioned edge of a billiard table with momentum, p. After the collision with the cushion, it bounces straight back with the same amount of momentum in the opposite direction. What is the impulse on the ball?

A trajectile, of mass 20 g, traveling at 350 m/s, strikes a steel plate at an angle of 30-degrees with a plane of the plate. It ricochets off at the same angle, at a speed of 320 m/s. What is the magnitude of the impulse that the steel plate gives to the...

Imagine you find a 2 kg book on the floor and lift it 0.75 meters and put it on a table. find the work done ?

A force of 100N pulls a box of weight 200N along a smooth horizontal surface (angle = 45) Calculate the work done by the force. A- in moving the box a distance of 25m along the horizontal. B- against gravity. C- against normal force.

A grocer lifts an 8.0-kg carton from the floor to a height of 0.80 m in 5 sec. Calculate the power of man.

A force of 100N pulls a box of weight 200N along a smooth horizontal surface (angle 45) . Calculate the power of the applied force.

A force of 48 N pushes a 2 kg object initially at rest a distance of 3m along frictionless horizontally surface. Find: A- The work done on the object. B- The power of the applied force.

a rhombus has an area of 50 cm^2 and an internal angle of size 63 . find the lenght of its sides.

find the exact values when : x^2+2x >= 5

find k, given that the following are consecutive term of a geometric sequence. k,k+8,9k thank u

find the general term (un), of the geometric sequence which has : u7=24 and u15= 384 thank u

what will investment of 10 000 Yen amount to after 5 years if it earns 8% p.a. compund semi-annually ?

what is the difference between the real gases and the ideal gases ???

A force of 100N pulls a box of weight 200N along a smooth horizontal surface makes 45(degree) to the floor . Calculate the work done by the force. A- in moving the box a distance of 25m along the horizontal. B- against gravity. C- against normal force.

The spectrum of light from the galaxy M100 has a prominent dark line at a wavelength of 592.2 nm. The same spectral line observed in a lab on earth has a wavelength of 589.4 nm. How fast is M100 moving relative to earth? (the speed of light = 3.00 x 108ms...

A crane lifts 1 tonne of concrete through a height of 25 m. How much work does it do? (1 kg has a weight of 9.81 N.)

A student finds that a stretched rubber band stores 3.5 J of energy. She uses it to propel an object of mass 0.025 kg vertically upwards. What will be the initial speed of the object? How high can it travel before coming momentarily to rest?

Galileo drops a stone from the leaning tower of Pisa, which is 45 meters high. At what speed does the stone hit the ground?

Robin exerts a force of 100 N in pulling back his bow by 0.5 m. He fires the arrow (mass=0.2 kg) vertically upwards. a-How much energy is stored in his bow. b-How high does the arrow go?

A man drags a sack of flour of mass 50 kg at constant speed up an inclined plan to a height of 5m. The plane makes an angle of 30„awith the horizontal and a constant frictional force of 200 N acts on the sack down the plane. 1- How much work does the man...

Answers

The following answers were posted by visitors named Mota.

never true check ur answer by : x=1 1+1=1+0 2=1 so its never true :D

i solve it but i am not sure that they need the impulse , i think they need the velocity that will act on it ! because they say how much impulse does the mass experience .. impulse = change in momentum impulse = m x v 1200 = 60 x v 1200\60 = 60 x v \ 60 v...

i think 3/16 , because the total of the marbel is 16 and u want the probability of the yellow which equal to 3 . :)

No me gusta la historia

A 5300*10^-3 = 5.3

c 67800/10^3 = 67.8

c 4.2/10^3 = 0.0042

a 3 1/5 + 2 1/2 = 5.7 = 6

thank u and the answer will be w= mgh = 2*10*0.75 = 15j correct ?!!