A typical compound archery bow requiers a force of 133 N to hold an arrow at "full drwa " ( pulled back 71 cm ). ssunimg that the bow obeys hooke's law . what is its spring constant ?
did conver 71 to m
did use k = W/x to find spring constant ?
plese help me ?
evaluate the value of extension ( x) which elongate under the action of load (w) of 6 N ? [Use your results obtained from rest 1 ]
please help me How i can solve this question because I don't understand it clearly
A truck covers 80 m in 17 s while smoothly slowing down to a final speed of 5.6 m/s
a ) find its original speed
b) Final its acceleration
I want check my answer :
a )
Dx = 80 m
t = 17 s
v = 5.6 m/s
v0= ??
by appling the rule
Dx = 1/2(v+v0)t
80 = 1/2(5.6 + v0) 17
v0 =...
Hi all
How find the 3 value of x by using Calculator
u = 4x^3 - 4x = 0
I know this good way to solve iy
4x(x^2-1) = 0
X = 1 or X = -1 or X = 1
but I want a way bu useing a Calculator to find the 3 value of x
plese help me .
Hi
a ) find an equation for the horizontal tangent to the curve y=x-3root x
b) What is range of values of values of curve's slope ?
c ) What is range of values of curve ?
number a already I solved but my queation now in b and c
-----
I try to solve
b)
to get curve's slope must...
The mass of rock is 2.4 kg anf its volume is 950 cm^3 .
Find its density in (a) g/m^3 9b) kg/cm^3
I attch the answer see pic
[PLAIN]http://store2.up-00.com/Oct10/UyF43394.jpg [Broken]
A person travels by car from one city to another with different constant speeds between pairs of cities. She drives for 30.0 min at 80.0 km/h, 12.0 min at 100 km/h, and 45.0 min at 40.0 km/h and spends 15.0 min eating lunch and buying gas. (a) Determine the average speed for the trip. (b)...
A sconds pendulum taks 1 s to move from one extreme to the other
what is time period ?
what is frequency ?
what is the formula to use when found to time period and frequency the formula not writen in our note
Hi all
question on triangometry .
I know solve this quetion put are we saying :
tan = 6/6.7 = 0.8955
or tan =6/6.7 =0.0156
I don't n did we take tan or direct divide 6/6.7 = 0.8955
I want your help please .
One cubic centimeter (1.0 cm3) of water has a mass of 1.0 10-3 kg at 25°C. Determine the mass of 3.5 m3 of wa
One cubic centimeter (1.0 cm3) of water has a mass of 1.0 10-3 kg at 25°C. Determine the mass of 3.5 m3 of water at 25°C.
How i can solve this question ?
One gallon of paint (volume = 3.78 x 10-3 m3) covers an area of 25.0 m2 . What is the thickness ofthe fresh paint on the wall?
I want the concept to solve ?
The amount of water in reservoirs is often measured in acre-ft. One acre-ft is a volume that covers an area of one acre to a depth of one foot. An acre is 43,560 ft2. Find the volume in SI units of a reservoir containing 30.0 acre-ft of water.
I want the idea to solve this question
then...
True or false :
It is possible to have motion in the absence of a force (F)
beacuse no motion without force
If an object is not moving , no external force acts on it (T)
beacuse each object will not move unless a force acts on it
If a single force acts on an object , the object...
A hiker begins a trip by first walking 25.0 km southeast from camp. On the second day she walks 40.0 km in a direction 60.0 north of east, at which point she discovers a forest ranger's tower.
my answer is :
Ax = A cos (60 )
R= A+B = 25 + 40 = 65
thanks
Hi all >>
I want to check my answer >>> ??
my answer :
Vector -------X co ----- Y co
A------------> - >>>>>> -
B------------> + >>>>>> -
A+B---------> + >>>>>> -
Hi all
A car travels 20 km due north and then 35 km in a direction 60 degree west of north. Find the magnitude and direction of the car's resultant displacement.
How I can solve like this question ?
I try to solve :
the magnitude = R = A + B
= 55 km
direction of the car's...
Hi
Two vectors A and B are equal if they have the same magnitude and the same direction . this property allows us to translate a vector parallel to itself in a diagram without affecting the vector . In fact , for most purposes, any vector can be moved parallel to itself without being...
Hi all
the Q y = 9/4 - 3.3/2
the answer = -9/4
but when i try to solve i don't dounf same the answer
9/4 - 3 . 3/2
9/4 + 9 / 2
18 + 36 / 8 = 22.5
this answer which I found
regared
Hi all
I hve two Q I want the explaine how to solve
Q1 :(A) Find an equation for tangent to curve y = X^3 - 4X + 1 at the point (2,1)
(b ) What is the range of values of the curve's slope
Number ( A ) I can solve it but ( B) I face problem to solve...
A room is 25 ft long , 20 ft wide and 15 ft tall . Express the volume of the room in cubic metres . [ 1m = 3.281ft]
I sure my answer is wrong but I try
Now we have 25 ft long , 20 ft wide and 15 we must change all this to cubic metres
3.281ft = 1m
25 X 3.281ft...