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Derive an equation for interference of light for bright and dark fringes
find the range of aprojectile launched at an angle of 45° when an intial velocity of 25m/s.
An electric lamp whose resistance, when in use, is 2 Ω is connected to the terminals of a dry cell whose e.m.f. is 1.5 V. If the current through the lamp is 0.5 A, calculate the internal resistance of the cell and the potential difference between the terminals of the lamp. If two such cells are connected in parallel, find the resistance which must be connected in series with the arrangement to keep the current the same as before.
Three resistors R1, R2 and R3 are connected in series-parallel with R1 in series with the parallel combination of R2 and R3. The whole combination is connected across a 120 V DC source. Resistors R1, R2 and R3 take 750 W, 250 W and 200 W respectively. Calculate the resistance R2.
If 12𝑁 force is applied to a fluid of cross-section 5.34 𝑐𝑚2 with a shearing rate of
0.7 𝑠
−1
then find the viscosity of the fluid.
Solve the problem with complete solutions. A brass of 1 kg mass has an initial temperature of 98 degree Celsius is submerged in 0.64 kg of water at 7 degree Celsius. The final temperature is 30 degree Celsius. Find the specific heat capacity of the brass.
Solve the problem with complete solutions. What will be the final temperature if a 4 x 10^7 J of heat is transferred to a 1 kg block of aluminum initially at 20 degree Celsius?
Solve the problem with complete solutions. Determine the amount of heat released by a 3.0 kg of water when it cools from 80 degree Celsius to 10 degree Celsius.
Solve the problem with complete solution. In an experiment to determine the coefficient of linear expansion for aluminum, a .50 m rod is heated from 20 degree Celsius to 100 degree Celsius. The length increases to .84 m. Find the coefficient of linear expansion for aluminum.
Solve the problem with complete solution. A brass wire is .500 m long at 43 degree Celsius. If heated at 70 degree Celsius, what is the change in length?
