Recent content by Dongorgon

Homework Statement A trolley is of mass 20kg is pushed 35 metres up an inclined plane (to a height of 10m above ground level). The inclined plane is at arcsin(2/7) to the horizontal. A 100N force pushes the trolley to the top of the plane, the force being parallel to the inclined plane. The...

Many thanks for the replies, very much appreciated. The question only stated that the initial velocity is 0m/s. There's a diagram also which doesn't display any frictional force, or any resistance force for that matter. I was just slightly unsure with the limited information really. Another...

Homework Statement A toy car of mass 20kg is pushed up the entirety of a 35m slope, inclined at an angle of arcsin(2/7) to the horizontal. The height at the top of the slope is 10m. The applied force which pushes the car up the slope is 100N, initially, the toy car is stationary...

Homework Statement A toy car of mass 20kg moves down a slope of length 35m, which is inclined at arcsin(2/7) to the horizontal. The height of the car initially is 10m, and a constant frictional force of 100N acts against the car through motion. Calculate the work done, power and efficiency of...

Yeah, through working out the KE via 1/2mv^2 it obtains a value of 1980J. But for some reason, this seems far too small considering this energy can carry the rider 32km also? Would I be correct in thinking this value for KE is also the total energy stored by the battery? Also, there are no more...

Homework Statement An engineer was to design a bicycle that can be powered only by an electric motor. The bicycle can carry an 80kg rider at a maximum speed of 6m/s. Under these conditions the maximum distance the bicycle can cover before the battery needs to be recharged is 32km. The...

Homework Statement A sphere of mass 0.1 kg is pushed against a rubber band catapult with a force of 80N, and released upwards. Calculate: A) The strain potential energy when stretched by 0.3m B) The work done by the applied force C) The speed of the sphere when released D) The...

From what I am aware, β is the fringe width and I'm truly not sure what Yo even is, possibly the width of intensity?

Homework Statement The question is as follows, I'm truly stuck where to start here, any help would be much appreciated: A transparent paper of refractive index 1.45 and thickness 0.02mm is pasted on one of the slits of a double slit experiment. Monochromatic light of wavelength 620nm is...

My main issue here is determining the correct reaction force, I'm truly lost as to where I'm making a mistake? The question is: A uniform rod of length 2m and mass 5kg is connected to a vertical wall by a smooth hinge at A and a wire CB as shown. If a 10kg mass is attached to D, find: The...

Hi all, currently having a few issues with understanding a few aspects of questions involving normal reactions at angles. Just an example of where I am going wrong: 'A loft door OA of weight 100N is propped open at 50 degrees to the horizontal by a strut AB. The door is hinged at O...

Brilliant, thanks for your reply and confirmation! There's also two more questions I'm slightly apprehensive about, I'm also unsure whether the first refers to a full-wave/half-wave with a capacitor? Q1: Explain filter circuits to remove ripples. Q2: Explain the use of stabilising...

Homework Statement Hello all, there are three fairly simple electronics related questions of an assignment to be handed in tomorrow, and whilst the initial answers as obvious, I'd greatly appreciate some assistance on elaborating on certain questions: 1. Explain the reasons for requiring...

So both part B and C have the same answers of 56.2 aJ? For D would the answer be along these lines?

Homework Statement A particle with a charge of 3.2x10^-19 C accelerates from rest between two charged plates. The electric field is uniform and is 39000 N/C. The distance between the plates is 4.5x10^-3 m. A) Calculate the force on the particle B) How much work is done by the electric...