object of unknown material has a weight of 147 N when it is measured with a spring scale. If the object is submerged in water, the scale reads 91.5 N. What is the density of the unknown object?
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
- object of unknown material has a weight of 147 N when it is measured with a spring scale. If the object is submerged in water, the scale reads 91.5 N. What is the density of the unknown object?
- 3.10 kg mass is oscillating in simple harmonic motion at the end of a frictionless horizontal spring with spring constant k = 54 N/m. The mass has a speed of 1.21 m/s when it passes through the equilibrium position. How fast will it be going when it is 0.16 m away from equilibrium?
- One particular string on a harp has a length of L = 0.850 m and plays a note of frequency f = 130.8 Hz. If the string is placed under a tension of 94.8 N, what linear density μ should the string have?
- When the harpist plucks a string on their harp it produces a sound with a sound intensity level of 52 dB. If 8 harp strings were played simultaneously, each at 52 dB, what would be the total sound intensity level?
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