Dib
Popular questions and responses by Dib
Physics
Block B in the figure(Figure 1) rests on a surface for which the static and kinetic coefficients of friction are 0.65 and 0.40, respectively. The ropes are massless.What is the maximum mass of block A for which the system is in equilibrium? (Consider the
asked on October 10, 2014 
Physics
In an electricity experiment, a 1.30g plastic ball is suspended on a 56.0cm long string and given an electric charge. A charged rod brought near the ball exerts a horizontal electrical force F⃗ elec on it, causing the ball to swing out to a 25.0∘ angle
asked on October 1, 2014 
Physics
Here is a simple example. The inhabitants of a small island begin exporting beautiful cloth made from a rare plant that grows only on their island. Seeing how popular the small quantity that they export has been, they steadily raise their prices. A
asked on August 27, 2014 
Calc Physics
Geologists place tiltmeters on the sides of volcanoes to measure the displacement of the surface as magma moves inside the volcano. Although most tiltmeters today are electronic, the traditional tiltmeter, used for decades, consisted of two or more
asked on December 3, 2014 
Physics
A box of mass m and initial speed v0 slides distance d across a horizontal floor before coming to rest. Use work and energy to find an expression for the coefficient of kinetic friction.Express your answer in terms of the variables v0, d, and free fall
asked on November 8, 2014 
Physics
Compressed air is used to fire a 50g ball vertically upward from a 0.60mtall tube. The air exerts an upward force of 3.0N on the ball as long as it is in the tube. How high does the ball go above the top of the tube?
asked on October 1, 2014 
PHYS. (forces)
A Styrofoam ball has just been shot straight up. Air resistance is not negligible. Draw a freebody diagram. i only have two attempts left and im not sure what im doing wrong. is the direction of gravity(down) and drag (up) wrong?
asked on September 23, 2014 
Calculus 2
use the method of cylindrical shells to find the volume of the solid obtained by rotating the region bounded by the given curves about the xaxis. xy=1, x=0, y=1, y=3
asked on August 30, 2014 
Structures/Engineering
Design for flexure a simple beam 14 ft in length and having a total uniformly distributed dead load of 13.2 kips and a total uniformly distributed live load of 26.4 kips.
asked on February 16, 2017 
Physics
What is the maximum speed of a 3.40g particle that oscillates between x =2.0mm and x =8.0mm in the figure? (Figure 1) Description of Figure: Parabola with the lowest point at (4,1) parabola starts at(2,5) and ends at (8,5) Yaxis is U(J) Xaxis is x(mm)
asked on November 1, 2014 
Physics
A 56kg student is standing atop a spring in an elevator that is accelerating upward at 3.1m/s2 . The spring constant is 2100N/m . By how much is the spring compressed?
asked on October 31, 2014 
Physics
What is the velocity of the simple harmonic motion problem? Position of the graph is y= .4*cos(2pi*1/3*x)+1.2 I need to find the velocity as well as the acceleration. I have worked through it and keep getting that the velocity is 0. I don't believe that is
asked on March 2, 2016 
Physics
What is the velocity of the simple harmonic motion problem? Position of the graph is y= .4*cos(2pi*1/3*x)+1.2 I need to find the velocity as well as the acceleration. I have worked through it and keep getting that the velocity is 0. I don't believe that is
asked on March 1, 2016 
Physics
Geologists place tiltmeters on the sides of volcanoes to measure the displacement of the surface as magma moves inside the volcano. Although most tiltmeters today are electronic, the traditional tiltmeter, used for decades, consisted of two or more
asked on December 3, 2014 
Physics Quick
Quick question because i am trying to complete a lab report. How can i find the linear tangential acceleration of a wheel as it is turned by two hanging masses by using Newton's Second Law and the equation ΣT=Iα?
asked on December 2, 2014 
Physics
Quick question because i am trying to complete a lab report. How can i find the linear tangential acceleration of a wheel as it is turned by two hanging masses by using Newton's Second Law and the equation ΣT=Iα?
asked on December 2, 2014 
Physics
A 4.40kg block hangs from a spring with spring constant 2160N/m . The block is pulled down 4.60cm from the equilibrium position and given an initial velocity of 1.40m/s back toward equilibrium. A) What is the frequency of the motion? B) What is the
asked on November 24, 2014 
physics
A 4.40kg block hangs from a spring with spring constant 2160N/m . The block is pulled down 4.60cm from the equilibrium position and given an initial velocity of 1.40m/s back toward equilibrium. What is the frequency of motion? What is the amplitude? What
asked on November 23, 2014 
Physics
A 4.40kg block hangs from a spring with spring constant 2160N/m . The block is pulled down 4.60cm from the equilibrium position and given an initial velocity of 1.40m/s back toward equilibrium. What is the frequency of motion? What is the amplitude? What
asked on November 23, 2014 
Physics
A 4.80kg cat leaps from the floor to the top of a 94.0cmhigh table. If the cat pushes against the floor for 0.230s to accomplish this feat, what was her average power output in hp during the pushoff period?
asked on November 8, 2014 
Physics
The spring shown in the figure is compressed 59cm and used to launch a 100 kg physics student. The track is frictionless until it starts up the incline. The student's coefficient of kinetic friction on the 30∘ incline is 0.14 . k= 80,000 N/m m=100 kg uk=
asked on November 8, 2014 
Physics
What is the maximum speed of a 3.40g particle that oscillates between x =2.0mm and x =8.0mm in the figure? (Figure 1) Description of Figure: Parabola with the lowest point at (4,1) parabola starts at(2,5) and ends at (8,5) Yaxis is U(J) Xaxis is x(mm)
asked on November 1, 2014 
CalcPhys
In an electricity experiment, a 1.30g plastic ball is suspended on a 56.0cm long string and given an electric charge. A charged rod brought near the ball exerts a horizontal electrical force F⃗ elec on it, causing the ball to swing out to a 25.0∘ angle
asked on October 1, 2014 
Physics
A rocket is launched straight up with constant acceleration. Four seconds after liftoff, a bolt falls off the side of the rocket. The bolt hits the ground 6.70s later. What was the rocket's acceleration? Express your answer with the appropriate units.
asked on September 3, 2014 
Calculus 2
use the method of cylindrical shells to find the volume generated by rotating the region bounded by the given curves about the yaxis. y=x^(1/3), y=0, x=1
asked on August 29, 2014

Physics
How exactly do you get those answers? Also, the program says those are not the right answers.
posted on December 3, 2014 
Physics
Never mind. i figured it out. the diagram didn't even come out right anyways. Tension(T)=mu_static(μ_s)* mass(m)* gravity(g) T=.65(20)(9.8)= 127.4 N T=m(g) 127.4=m(9.8) m=13 kg for block A
posted on October 10, 2014 
CalcPhys
I forgot the questions. What is the magnitude of F⃗ elec? What is the tension in the string?
posted on October 1, 2014