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Two masses, 0.600 kg and 0.300 kg, begin uniform motion at the same speed, 0.800 m/s, from the origin at t = 0 and travel in the directions shown in Figure
(a) Find the velocity of the center of mass in unit–
vector notation. (b) Find the magnitude and direction of the velocity of the center of mass. (c) Write the position vector of the center of mass as a function of time.
When a rotating disk is observed from a standstill at some point, it spins 15 rounds at 5s and then 24 turns. Find the number of rotations in another 5s and the number of rotations of the disk from stillness at the moment of initial observation.
A body of weight 50N is hauled along a tough horizontal plane by a pull of 18N acting at an angle of 14° with the horizontal. Find the coefficient of friction
From the data gathered by BSMarE student about the relative density of paraffin, paraffin has a 68.3 mass in air, mass of sinker in water is 122.4 and mass of paraffin and sinker in water is 126.5. Compute the following Add the mass of the paraffin in air to the mass of the sinker in water and record it. Subtract the mass of the paraffin block and the sinker when both are in water from the combined mass if the paraffin block in air and the sinker in water to get the apparent loss in the mass of the paraffin block. Divide the mass of the paraffin block in air by the apparent loss in mass of the clock to obtain its relative density. Compare the average value with the accepted value or the theoretical value and compute for the percentage error.
An aluminum tube is observed to be 60.4 cm long at 300 C. The tube is then set up in a linear expansion apparatus adjusted so that the initial gauge reading is zero. Steam at 1000 C is then allowed to enter the tube. After thermal equilibrium is attained at 100o C, it is observed that the change in pointer position of the apparatus is 100 divisions, where 1 pointer division change is equivalent to an expansion of 0.01mm. From this data, compute the coefficient of linear expansion of the rod and the percentage error. The accepted value of this coefficient for the rod is 2.4 x 10-5 / C0 . Express your answer to three significant figures.
use the following information to write the boolean expression for the truth table using AND , OR and NOT gates
-construct the diagram then simulate the operation
-minimize the circuit using karnaugh map , the construct the circuit and simulate it,
The Sun has a radius of 7×10 to raise the power of 8 m, approximately, and a period of rotation
about its axis equal to 24.7 days. What is the Doppler shift of a spectral line with
laboratory wavelength 500 nm, in the light emitted (a) from the center of the Sun
and (b) from the edges of the Sun’s disk at its equator?
A pulley is used to lift a car engine . The engine is lifted 35.6 cm for every 1.07 m the rope is pulled . What is the IMA of the pulley
A 2.00 kg mass hangs from the ceiling. The length of the string that attaches the mass at its center of gravity to the ceiling is 85 cm. The mass is pulled away from this vertical position so that it makes an angle of 20˚ with respect to the vertical. The mass is released from this position in a frictionless environment and allowed to oscillate. Calculate the maximum velocity of the mass. (6)
A ship has an area of cross section at the water line 200cm^2
a.by what depth does the ship sink in fresh water when it loads a cargo of 4000 tonnes
b. if the ship plus cargo has a displacement turnage of 12300 tonnes, by what amount will the ship raise in the water when it sails from fresh water into sea water
