?

Consider the waveform expression. 

 Y (x,t) = ymSin(1.73 + 0.435x +531t)

The transverse displacement (y) of a wave is given as a function of position (x in meters) and time (t in seconds) by the expression. Determine the wavelength, frequency, period, and phase constant of this waveform.

λ = ? Metres 

T= ? Seconds 

f = ? Hertz 

ϕ = ? Radians

Part A: Engineers can determine properties of a structure that is modeled as a damped spring oscillator, such as a bridge, by applying a driving force to it. A weakly damped spring oscillator of mass 0.230 kg is driven by a sinusoidal force at the oscillator's resonance frequency of 33.4 Hz. Find the value of the spring constant.

Spring constant ----> ???? N/m (I got 10129N/m)

Part B: The amplitude of the driving force is 0.444 N and the amplitude of the oscillator's steady‑state motion in response to this driving force is 0.939 m. What is the oscillator's damping constant?

Damping constant ----> ???? Kg/s

Thank you. 

Anyone help me assess the strengths and weaknesses of judicial review? Should Canada adopt a weaker form of judicial review like the UK? 

Anything helps, Thank you, 

Not a political science student, but can anyone help me formulate strengths and weaknesses from section 24(2) Canadian charter rights of freedom?

 Anything helps, Thanks. 

Part 2 from this question (check link):

Suppose that we hang a body of mass m from a cord in the "previous problem". Find the angular acceleration of the disk and the tangential acceleration of a point on the rim in this case. 

Link --> https://ca.answers.yahoo.com/question/index?qid=20...

-- The same image is used (Final question).

Thank you, 

If the radius of the grindstone is 0.50m (previous example, check link), calculate

a) Linear or tangential speed of a particle on the rim

b) Tangential acceleration of a particle on the rim

c) Centripetal acceleration of a particle on the rim at end of 2.0 sec

d) Are the results the same for a particle halfway in from the rim, that is, at r = 0.25 m? 

This is a part 2 question, it was determined that w = 6 rad/sec and theta = 1.5t^2

link -> https://ca.answers.yahoo.com/question/index?qid=20...

(same image used)

Thank you, 

A 100g block on a frictionless table is firmly attached to one end of a spring with k = 20N/m. The other end of the spring is anchored to the wall. A 20g ball is thrown horizontally toward the block with a speed of 5.0m/s.

a) If the collision is perfectly elastic, what is the balls speed immediately after the collision?

b) What is the maximum compression of the spring?

c) Repeat parts a and b for the case o perfectly inelastic collision 

An athlete at the gym hold a 3kg steel ball in his hands. His arm is 70 cm long and has a mass of 4.0kg. What is the mangintude of torque about his shoulder if he holds his arm...

a) Straight out to his side, parallel to floor

b) Straight, but 45 degrees below horizontal? 

Ty,

The bones of the forearm (radius and ulna) are hinged to the humerus at the elbow. The biceps muscle connects to the bones of the forearm about  2.15  cm beyond the joint. Assume the forearm has a mass of  2.45  kg and a length of  0.465  m. When the humerus and the biceps are nearly vertical and the forearm is horizontal, if a person wishes to hold an object of mass  5.35  kg so that her forearm remains motionless, what is the force exerted by the biceps muscle?

A stick is resting on a concrete step with  15  of its total length  𝐿  hanging over the edge. A single ladybug lands on the end of the stick hanging over the edge, and the stick begins to tip. A moment later, a second, identical ladybug lands on the other end of the stick, which results in the stick coming momentarily to rest at  𝜃=62.1∘  with respect to the horizontal, as shown in the figure. 

If the mass of each bug is  3.43  times the mass of the stick and the stick is  17.5 cm  long, what is the magnitude of the angular acceleration  𝛼  of the stick at the instant shown? 

Thank you, 

A spherical shell of radius  1.34 cm  and a sphere of radius  7.72 cm  are rolling without slipping along the same floor. The two objects have the same mass. If they are to have the same total kinetic energy, what should the ratio of the spherical shell's angular speed to the sphere's angular speed be? 

Assignment caught me off guard, due today, helppp (more on the way)

I got x^2 - 1/4x^2, so I found out the derivative of that and got x^4 + 1/16x^4. Why in the answer booklet it says, the first derivative is x^4 - 1/2 +1/16x^4 ?

Thank you