05/29/21

Angular Kinetics
A mountain biker tries to start pedalling in the mud. The total mass (80 kg, bike + biker) is distributed equally between the front and rear wheels. There is a loss of 10% of moment of force... more
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05/29/21

Physics- Velocity
While at a track meet, you notice a time delay between when you see the starter’s pistol fire and when you hear it. If that delay is 0.4 seconds, how far away are you? Draw a picture of the situation. more
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05/28/21

Find the volume of the solid obtained by rotating the region

Find the volume of the solid obtained by rotating the region in the first quadrant bounded by the curvesx=0, y=1, x=y4 , about the line y=1.
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05/28/21

please show work

A 40.0-N crate starting at rest slides down a rough 6.00-m-long ramp, inclined at 30.0∘ with the horizontal. The magnitude of the force of friction between the crate and the ramp is 6.0 N. What is... more
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05/28/21

please show work

A block-spring system vibrating on a frictionless, horizontal surface with an amplitude of 6.0 cm has an energy of 12 J. If the block is replaced by one whose mass is twice the mass of the... more
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05/26/21

what is the tension in the rope
A 50N body is supported by two ropes, one making 30° with the vertical and another making 45°with the horizontal from the left attachment respectively. What is the Tension in the ropes?
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05/23/21

Kinetics question 1
A snowboarder takes speed downhill in order to get up a hill without pushing. If he arrives at the bottom of the hill with a velocity of 60 km/h, will he be able to get up a hill 75 m long with an... more
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05/21/21

Operating system
Servers can be designed to limit the number of open connections. For example, a server may wish to have only N socket connections open at any point in time. After N connections have been... more
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05/20/21

physics (forces)
A non-zero net force acting on an object can have which of the following effects on the object?Question 1 options: the velocity can increase the velocity can decrease the velocity of the... more
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05/20/21

Do mass increase, time dilation, and length contraction occur at normal speeds (~100 mph)? Explain.
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05/20/21

An astronaut travels at 0.93c. As one hour passes for her how much time passes for an observer on earth?
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05/20/21

show that question differentiation -HELP URGENT!!!!!!!
show that g(x)=dx2+ex=f is g(x)=1.61x2 -30.55x + 156.51 ---- the equation between the points B(8,15) and C(11,15) where the gradient of the tangent of point B is -5.5283.show that h(x)=px2+ux+w is... more
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05/20/21

I need these question answered please
For the three-part question that follows, provide your answer to each question in the given workspace. Identify each part with a coordinating response. Be sure to clearly label each part of your... more
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05/20/21

Find the area of the region.
Sketch the region enclosed by the given curves. Find its area.y = tan(7x),    y = 2 sin(7x),    −𝜋/21 ≤ x ≤ 𝜋/21
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05/20/21

Bullet Question
A bullet is shot out of a gun with a velocity of 33.0 m/s {right} and maintains that velocity as a frictionless projectile until it hits a large target. It enters a barn-size structure which is... more
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05/20/21

Finding critical points and absolute extrema
Question Image Link: https://i.imgur.com/vFvf65s.pngThe graph of g(t) is shown on the interval [0, 6] and f(x) = ∫ 0 to x g(t) dt. a) Find the critical points of f(x), and identify each as a... more
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05/19/21

p and q are two components of a given force f and its line of action divides the angle between them in the ratio of 1:2 ,prove that q(f+q)=p^2
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05/19/21

Sound waves are an example of transverse waves.
a. Trueb. False
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05/18/21

Calculus need help please
8. Using the Mean Value Theorem and Rolle’s Theorem, show that has exactly one real root.
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05/18/21

Calculus need help please
7. Find the exact x-value where the function  () attains a maximum value. An estimated answer or a calculator answer will not earn any credit.
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05/18/21

A mass hanging from a spring is set in motion and its ensuing velocity is given by v(t) = 2𝛑cos𝛑t, for t ≥ 0.

Assume that the positive direction is upward and s(0) = 0. Determine the position function, for t ≥ 0. Graph the position function on the interval [0,4]. At what times does the mass reach its low... more
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05/18/21

What is the cosine of an angle,θ , in standard position if its terminal ray intersects the unit circle at (0.64, -0.766? In which quadrant does this point lie?
A) cos (θ)= 0.64, quadrant 4B) cos (θ)= -0.77, quadrant 2 C) cos (θ)= -0.77, quadrant 4D) cos (θ)= 0.64, quadrant 2
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05/18/21

Simple harmonic motion
Consider a spring-mass system on a horizontal frictionless surface. The system has a spring constant of 250N/m and a mass of 0.9kg. The system is released with an initial compression of the spring... more
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05/18/21

PLEASE HELP ME ANSWER
(a) Find the amplitude, frequency, and period of motion for an object vibrating at the end of a horizontal spring if the equation for its position as a function of time is x=(.52m)cos((𝜫/4)... more
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05/17/21

My question is about the rotatioanal motion
A some is attached to the string.The stone is rotating in a circle, the center is C and the radius is 85cm, at constant speed in a verticle plane, the stone has mass of 50g and it takes 0.12s to... more
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