On a spacecraft two engines fire for a time of 589 s. One gives the craft an acceleration in the x direction of ax = 5.09 m/s2, while the other produces an acceleration in the y direction of ay = 7.50 m/s2. At the end of the firing period, the craft has velocity components of ...
A new screening test for a disease is developed for use in the general population. The sensitivity and specificity of the new test are 60% (240) and 70%, (280) respectively. Four hundred (400) people are screened at a clinic during the first year the new test is implemented. (...
If f(x)=3x-1 and g(x)=2/3x+2 find: a) f(-3)+g(6) b)f(3)-g(2)
year 8 math
a snail is at the bottom of an empty trough with walls 40cm high. If the snail manages to move 4cm up a wall each day, but slips 3cm each night, how long does it take the snail to reach the top of the trough? it then continues over the wall and makes it's way down to the g...
Writing-Please Help! :(
maybe man and wife?? maybe: u were part of my life, sometimes we balanced on the edge of a knife, but we were like man and wife.
3-bromo-3-ethylpentene is treat with HBr what main product does it yield?
multiple M and the velocity 9.9405
write five sentences about the role of education in successful financial planning, in which you correctly use a different verb tense in each sentence. Mark each verb used in bold and, in parentheses, identify the specific tense use I need help to identified the verb and the sp...
It is Density equals mass divided by volume
Which part of the comprehensive financial plan do rent and food fall under? What about life insurance, long-term care insurance, and estate planning; which section of the comprehensive plan do these fall under?
Hi, I am confused on the height change. By 4.9 did you mean 4.8? and if so do I set it equal to zero to solve? is the v in the centripetal force different from the v in KE?
A poorly designed playground slide begins with a straight section and ends with a circular arc as shown in the figure below. img716.imageshack.us/img716/8381/25746193.jpg A child starts at point P and slides down both sections of the slide. At some point on the circular arc, t...
How do I do that? the only info missing is the angle is 60 degrees... force > => block1 block2 / force @60deg uk=0.29
A force of 23.52 N pushes and pulls to blocks as shown in the figure below. The vertical contact surfaces between the two blocks are frictionless. The contact between the blocks and the horizontal surface has a coefficient of friction of 0.29. The acceleration of gravity is 9....
The suspended 2.29 kg mass on the right is moving up, the 1.3 kg mass slides down the ramp, and the suspended 7.7 kg mass on the left is moving down. There is friction between the block and the ramp. u=0.15 The acceleration of gravity is 9.8 m/s2 . The pulleys are massless and...
A 33.5 kg person stands on a 67 kg platform. He pulls on the rope that is attached to the platform via the frictionless lower-right pul- ley. He pulls the rope at an angle of 35◦ to the horizontal, as shown in the figure below. Assume: g = 9.8 m/s2 . Ignore friction. The...
A pulley is massless and frictionless. 3 kg, 2 kg, and 6 kg masses are suspended. What is the tension T1 in the string between the two blocks on the left-hand side of the pulley?
horizontal surface. The block is connected by a cord passing over a pulley to another block of mass 5.53 kg which hangs in the air, as shown on the following picture. Assume the cord to be light (massless and weightless) and unstretchable and the pulley to have no friction and...
A pulley is massless and frictionless. 3 kg, 2 kg (on the left), and 6 kg (on the right) masses are suspended What is the tension T1 in the string be- tween the two blocks on the left-hand side of the pulley? Can I solve this like if it was two masses? My prof gave an example ...
A rowboat crosses a river with a velocity of 1.01 m/s at an angle 30◦ North of West relative to the water. Waters frame of reference: speed of boat: 1.01 m/s direction from current: 30◦ The river is 322mwide and carries a current of 1.63 m/s due East. Shore...
A 1.3 kg mass accelerates at 5.8 m/s2 in a direction 36◦ north of east. One of the two forces acting on the mass has a magnitude of 17.3 N and is directed north. Determine the magnitude of the second force. Answer in units of N.
A block is pushed up a frictionless incline by an applied horizontal force as shown. The acceleration of gravity is 9.8 m/s2 . mass=2.7 kg F = 33 N theta=29◦ What is the magnitude of the resulting ac- celeration of the block? Answer in units of m/s2.
Before throwing a 0.821 kg discus, an athlete rotates it along a circular path of radius 1.19 m. The maximum speed of the discus is 18.7 m/s. Determine the magnitude of its maximum radial acceleration. Answer in units of m/s2.
The speed of the tip of the minute hand on a town clock is 0.00136 m/s. (a)What is the speed of the tip of the second hand of the same length? Answer in units of m/s. (b)What is the centripetal acceleration of the tip of the second hand? Answer in units of m/s2
A home run is hit such a way that the baseball just clears a wall 27 m high located 147 m from home plate. The ball is hit at an angle of 37◦ to the horizontal, and air resistance is negligible. Assume the ball is hit at a height of 1 m above the ground. The acceleration...
thank you so much!!!
A particle has r(0)= (4m)j and v(0)= 92 m/s)i If tts acceleration is constant and given by a=-(2 m/s^2)(i+j), at what time t does the particle first cross the x axis? t=2 s, thanks Damon Also, at what time t is the partilce moving parallel to the y axis; that is the j direction?
A particle has r(0)= (4m)j and v(0)= 92 m/s)i If uts acceleration is constant and given by a=-(2 m/s^2)(i+j), at what time t does the particle first cross the x axis?
System of equation
solve system of equations graphically and check 2x - y = 5 3x + 2y = 4
A particularly beutiful note reaching your ear from a stradivarius violin has a wavelength of 39.1cm. The room is slightly warm, so the speed of sound is 344m/s. If the string's linear density is 0.670g/m and the tension is 140N, how long is the vibrating section of the vi...
Does any one know where I can find a skeletal muscle cell diagram that shows its organelles? I have been having a hard time finding one. Maybe I need to improve my researching skills :) Thank you in advance!!!!
Help (!?) me unscramble these letters S L A T E F Do you want one word? FESTAL? An adjective as in relating to a festival?
1)In the special case of projectile, at what initial angle the range equals the maximum height? If A is the launch angle measured from horizontal and V is the launch velocity, the maximum height achieved is H = (1/2) (V^2/g) sin^2A and the range is R = 2 (V^2/g) sin A cos A. Y...
1)The acceleration due to gravity on the moon is 1.67 m/s2. If a person can throw a stone 12.0 m straight upward o the earth, how high should the person be able to throw a stone on the moon? Assume that the throwing speeds are the same in two cases. The height H attained when ...
1)A student at a window on the second floor of a high school building sees his math teacher coming along a walkway besides the building. He drops a water balloon from 18.0 m above the ground when it the teacher is 1.00 m from the point directly beneath the window. If the teach...