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Mota
Questions (28)
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
1 answer
674 views
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
2 answers
1,337 views
Galileo drops a stone from the leaning tower of Pisa, which is 45 meters high. At what speed does the stone hit the ground?
1 answer
1,076 views
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
1 answer
606 views
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.)
2 answers
747 views
The spectrum of light from the galaxy M100 has a prominent dark line at a wavelength of 592.2 nm. The same spectral line
1 answer
667 views
A force of 100N pulls a box of weight 200N along a smooth horizontal surface makes 45(degree) to the floor .
Calculate the work
1 answer
675 views
what is the difference between the real gases and the ideal gases ???
1 answer
672 views
what will investment of 10 000 Yen amount to after 5 years if it earns 8% p.a. compund semi-annually ?
1 answer
467 views
find the general term (un), of the geometric sequence which has :
u7=24 and u15= 384 thank u
2 answers
2,399 views
find k, given that the following are consecutive term of a geometric sequence.
k,k+8,9k thank u
1 answer
1,193 views
find the exact values when :
x^2+2x >= 5
1 answer
425 views
a rhombus has an area of 50 cm^2 and an internal angle of size 63 . find the lenght of its sides.
2 answers
1,872 views
A force of 48 N pushes a 2 kg object initially at rest a distance of 3m along frictionless horizontally surface. Find:
A- The
1 answer
546 views
A force of 100N pulls a box of weight 200N along a smooth horizontal surface (angle 45) .
Calculate the power of the applied
1 answer
636 views
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.
1 answer
678 views
A force of 100N pulls a box of weight 200N along a smooth horizontal surface (angle = 45)
Calculate the work done by the force.
3 answers
748 views
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 ?
3 answers
558 views
1 ms = ? s
1 mile second = ??? second
0 answers
329 views
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
1 answer
1,567 views
A billiard ball approaches a cushioned edge of a billiard table with momentum, p. After the collision with the cushion, it
1 answer
2,075 views
If a force of 300N is exerted upon a 60 kg mass for 4 seconds, how much impulse does the mass experience?
3 answers
2,273 views
3�ã2+(�ã2)^3
i don't know how to add them ??
1 answer
318 views
can you please gave me 3 argument with there evedence about useing a cell phone while driving ..
thank u ..
1 answer
370 views
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
1 answer
489 views
Draw a diagram to represent the identity (a + b)2 = a2 + 2ab + b2.
2 answers
2,449 views
Rationalise the expression 1/(�ã2 + �ã3).
1 answer
1,011 views
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
1 answer
1,127 views
Answers (10)
thank u :)
thank u and the answer will be w= mgh = 2*10*0.75 = 15j correct ?!!
a 3 1/5 + 2 1/2 = 5.7 = 6
c 4.2/10^3 = 0.0042
c 67800/10^3 = 67.8
A 5300*10^-3 = 5.3
No me gusta la historia
i think 3/16 , because the total of the marbel is 16 and u want the probability of the yellow which equal to 3 . :)
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=
never true check ur answer by : x=1 1+1=1+0 2=1 so its never true :D
