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Q. Estimate the Calorie content of 75 g of candy from the measurements. A 25 g sample of the candy is allowed to dry before putting it in a bomb calorimeter. The aluminum bomb has a mass of 0.725 kg and is placed in 2.60 kg of water contained in an aluminum calorimeter cup of mass 0.624 kg. The initial temperature of the mixture is 15.0°C, and its temperature after ignition is 53.5°C.
finding the thermal conductivity (k) of a box with total surface area of 1.20 m and a wall thickness of 4cm is made of an insulating material. a 10 W electric heater inside the box maintain the inside temp. at 15 C above the outside temp.
When G was first measured by Henry Cavendish, newspapers of the time hailed his experiment as "weighing Earth experiment." And Why.
Besides the gravitational force, a 3.40-kg object is subjected to one other constant force. The object starts from rest and in 1.20 s experiences a displacement of (5.50 - 3.30) m, where the direction of is the upward vertical direction. find the ..
Find out total vector displacement
How long does it take for amplitude to drop to half its initial value . How long does it take for mechanical energy to drop to half its initial value.
A battery having an emf of 11.10 V delivers 102 mA when connected to a 61.0 load. Find out the internal resistance of the battery.
The parallel metal plate of a capacitor is detached by a distance of 0.5cm and is connected to a 90v battery. Find the electric field between them and surface charge density on the plate.
A thin copper rod 1 m long has a mass of 50 g. What is the minimum current in the rod that would allow it to levitate above the ground in a magnetic field of magnitude 0.100 T.
An object of mass m is attached to a horizontal spring, stretched to a displacement A from equilibrium and released, undergoing harmonic oscillations on a frictionless surface with period T0. The experiment is then repeated with a mass of 4m. The sub..
A shell of mass m and speed v explodes into two identical fragments. If the shell was moving horizontally (the positive x direction) with respect to Earth, and one of the fragments is subsequently moving vertically with speed v, find out the velocity..
A man pushes on a piano with mass 180 {rm kg} so that it slides at constant velocity down a ramp that is inclined at 20.0^circ above horizontal floor. Overlook any friction acting on the piano.
An ice cube of mass ma and specific heat Ci is initially at temperature T1, where T1 is less than 273K. If L is the latent heat of fusion of water, and the specific heat of water is Cw, how much energy is needed to convert the ice cube to water at ..
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