12/18/19

Work and Energy and Circular motion.

A stone swings on a horizontal circle at the end of a string 2.0 m long. The period of the motion is 1.2 s. How much work does the tension in the string do on the stone in .40 s? I am having much... more

12/18/19

physics circular motion

A physics student is whirling a bucket of water in a vertical circle of radius 1.4 meters. What is the minimum speed the bucket must maintain at the top of its path so that none of the water... more

11/27/19

Maxima and Minima

A sphere is inscribed in a right circular cone. Find the dimensions of the cone if the diameter of the sphere is 16cm.

Moment of Inertia Parallel axis theorem

Two rods of length a and mass m are joined together at right angle to form a T-squre. Show that MI about center of the T pendulum is (17m*a^2)/12 using parallel axis theorem

11/22/19

Asymptotic behavior

f(x) = k + u/(1+e^(b(x-t)))What is the asymptotic behaviour for low values of x and high values of x?

11/22/19

Physics 101 Calculating Diameter of Hair

You stretch a strand of your hair across a laser beam and observe the diffraction pattern this produces on a sheet of paper 1.25 m from your hair strand. You mark the center of the dark regions on... more

Moment of Inertia

So I have had these questions confusing me for some time and tried googling but came up with long , hard-to-understand equations and notations and articles. So I would be glad if someone could... more

Mean Value Theorem

Function f(x)=1/x on the interval [4,9]. Find the average/mean slope of the function on this interval. Then f'(c) is equal to the mean slope, find cmy work:a) f(x)=1/x((1/9)-(1/4))/(9-4)= -1/36b)... more

Find the equation of the hyperbola if:

a). the asymptotes are y=0.5x and y=−4−0.5x, and one of the vertices is (−4, 0).b). it has x-orientation, with vertices (2, 0) and (−2, 0), and it goes through the point (4, 5sqrt(3))PLEASE HELP... more

Find an equation of the tangent line at the given point.

xy+x^2y^2=6(2,1)

09/17/19

double rms speed of molecules of gas

A gas is at 200 K. If we wish to double the rms speed of the molecules of the gas, to what value must we raise its temperature? 

09/01/19

Calc 3 Extra Credit #1 Question 1

Find the area of the parallelogram having vectors u = < 1,2,1> and v= <3,1,1> as adjacent sides.

08/28/19

J.J.Thompson used a cathode ray instrument to measure the charge-to-mass ratio for the electron.

Consider a beam of particles travelling in the  direction through electrostatic plates of  between which the electrons are deflected (down) in the  direction by an electric field of magnitude  . A... more

SAT Math 2 -- Question involving Functions

Please help me understand the following question-- If f(2x) = x+5 and f(g(6)) = 13, then 2 * (g(6)) equals A) 6 B) 16 C) 32 D) 36 E) 64

Find the angular acceleration of the rod.

A light rod of length a can turn freely about the end A which is fixed, and the other end B is attached to a particle of mass m. The end B is joined by a string of length a to a small ring C of... more

Simple harmonic motion

A small marble slides along the inside of a cup which has a cross-sectional shape;y=0.100x²,where x is the displacement from the center of the cup and y is the height of the surface above the... more
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