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Why is it easier to twist open the cover of a large mouth jar as compared to one with a smaller cover? Explain.
The largemouth bass, locally called tawis, is plentiful in Pantabangan lake and is a good sporting fish. A 2-kg tawis is a normal catch. If an angler (a fisherman) catches five such tawis and strung his catch on a string and hangs his catch on a camachile tree, what is the tension in the string?
What is the angular velocity of the hour hand of a clock if it has a length L
and mass m?
A subwoofer needs a household voltage of 110A to push a current of 5.5A through its coil. What is the resistance of the subwoofer?
An electric heater works by passing a current of 100A through a coiled metal wire, making it red hot. If the resistance of the wire is 1.1 ohms, what voltage must be applied to it?
A light bulb has a resistance of 5 ohms and a maximum current of 10A.How much voltage can be applied before the bulb will break?
A force of 5.78x10^-16N acts on an unknown particle moving at an angle of 90 degrees through a magnetic field. if the velocity of the particle is 5.65x 10^4 m/s and 3.20x10^-2T, how many elementary charges does it carry
Three resistors with values of 60.0 Ω, 30.0 Ω,
and 20.0 Ω, respectively, are connected in
series to a 110.0 V battery of negligible
internal resistance. Draw a circuit diagram
and find the (a) equivalent resistance of
the combined resistors, (b) current flowing
through each resistor, (c) voltage drop
across each resistor, and (d) the power
dissipated by each resistor.
0.5 kg aluminium block is heated to 1000C and quickly placed into a beaker which contains water at 400C. If the final temperature of the system is 440C and specific heat of aluminium is 900 J/kg0C, calculate the mass of water
0.2 kg coffee at 900C is placed on beaker (specific heat of beaker is 700 J/kg0C) at 200C. the final temperature of the system is 760C. Calculate the mass of the beaker
