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A 4 kg mass is connected to a spring (k = 730 N/m) platform which undergoes simple harmonic motion in the vertical direction. The amplitude of the oscillation is 5 cm. At t=0 the box is 5 cm above the equilibrium position.
(a) What is the period of oscillation?
A mercury thermometer is constructed as shown below. Find the change in height of the mercury column that occurs with a temperature change of 24.0°C
A magnifying glass of diameter 10.5 cm focuses sunlight into a spot of diameter 0.550 cm. What is the energy flux in the local spot
A woman weighs 800 N on earth. When she walks on the moon, she weighs only 133 N. What is the acceleration due to gravity on the moon
A long straight wire suspended in the air carries a current of 8.2 A in the -x direction. The wire runs along the x-axis such that it goes through the origin. find the magnitude of the magnetic force on the electron
A capacitor is consists of two short sections of parallel wires in air. One wire is found to be of the voltage of 56 V, What is the capacitance of the two wires
Several people are riding in a hot-air balloon. The combined mass of the people and balloon is 348 kg. how much mass should be dropped overboard
T thin lense with a focal length of 50 cm is placed 100 cm from an object. How far behind the lense should we place a screen
A 1500 car travelling at 26 suddenly runs out of gas while approaching the valley that looks like an inverted hump. 12m at the left where the care runs out of gas and 19 m at the right were it is headed. What will be the car's speed as it coasts into..
Children in a tree house lift a small dog in a basket 4.80 up to their house. If it takes 221 J of work to do this, what is the combined mass of the dog and basket
Calculate the specific heat of a metal from the following data. A container made of the metal has a mass of 3.3 kg and contains 15 kg of water. A 1.0 kg piece of the metal initially at a temperature of 170°C is dropped into the water
What is the rms speed of nitrogen molecules at a temperature of 55 oC? The mass of a nitrogen molecule is 4.680×10-26 kg
The pressure of air in your house can stay constant during the day if the temperature rises. Determine the number of moles of air that leave the house during the day time
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