Learn more about our help with Assignments: Physics
Search & Filtering
Classical Mechanics
(1) A thin metal wire , AB, is tied at the points A and B such that it is stiff. It is plucked one quarter way from one end.
a) Name the energy changes which take place if the wire is plucked with the finger or a small piece of broom.
b) Sketch a diagram to show the appearance of the plucked wire, and indicate the distance that represents one wavelength.
(2) Explain how a bimetallic strip works in an electric iron to switch it on and off.
(3) Explain why a metal spoon, left beside a flame for a few minutes becomes so hot to touch.
Classical Mechanics
a train starting from a railway station and moving with uniform acceleration attains a speed of 40km/h in 10 minutes find its aaceleration
Classical Mechanics
Two smooth spheres P,Q each of radius 25 cm and weighing 500N, rests in a horizontal channel having vertical walls. if the distance between the walls is 90 cm, make calculations for the pressure exerted on the wall and floor at points A,B and C.
Classical Mechanics
Given: A particle is moving along a straight line such that its velocity is defined as v = (-4s2) m/s, where s is
in meters.
Find: The velocity and acceleration as functions of time if s = 2 m when t = 0.
Classical Mechanics
what happens to the average kinetic molecular energy of water in your body when summer
Classical Mechanics
Human brain and the nervous system essentially consists of electrical circuitry. An average adult consumes 2800 Kcal. of energy daily in the form of food. Estimate the average power consumption of brain (in watts) if the organ uses one fifth of the total consumed energy. There is no gross change in the cerebral activity during sleep that lasts for an average duration of 7 hours per day.
Classical Mechanics
The speed of transverse wave in taut string is V. What will be the speed of transverse wave in that string if tension is kept unchanged and the length of the string is increased by 4 times ?
Classical Mechanics
A bead of mass m = 5000 g is released from point A and slides on the frictionless track as shown below. When it reaches height B, it is travelling at 8.64 km/h.Determine the change in height between A and B.
Classical Mechanics
A child of mass m is released from rest at the top of a water slide, at height h = 850.0 cm above the bottom of the slide. Assuming that the slide is frictionless because of the water on it, the child’s speed at the bottom of the slide is…..
Classical Mechanics
Hi i am a high school student! my question is
we have a gas and we dont care about temperature change. the pressure is given from the type P(V)=6/V and the starting V is Vo. what will happen to the pressure if V is increased by 8%.
I know from the theory that it should decrease by 8% due to boyle's law BUT my maths fail me and i cannot prove it
we have a gas and we dont care about temperature change. the pressure is given from the type P(V)=6/V and the starting V is Vo. what will happen to the pressure if V is increased by 8%.
I know from the theory that it should decrease by 8% due to boyle's law BUT my maths fail me and i cannot prove it
