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An object hangs from a spring balance. The balance registers 30 N in air, 20 N when the object is immersed in water and 24 N when the object is immersed in a liquid of unknown density. What is the specific gravity of the unknown liquid? (Recall Archimedes' lab) Sp grav= 0.60.
A mass-spring system with 0.250kg undergoes simple harmonic motion with period 0.52 seconds. When an additional mass (delta M) is added, the period increases by 21%. A) Find delta M. Express your answer to two significant figures and include the appr..
A laser beam is directed from air (n = 1.0) into an unknown liquid. The angle of incidence is measured to be 60° and the angle of refraction is measured to be 45°. What is the index of refraction of the unknown liquid?
An automobile weighing 2000lbs travels due west at a constand speed of 70 mph. The magnetic field in the area is a constant 2.5 µT due north. What is the normal force on the car
A man of mass m = 70.0 kg pushes a rotating platform of mass M = 85.0 kg and radius R = 3.00 m at the playground with a tangential force tF of magnitude 55.0 N for 10.0 s. Ignore air resistance.
Consider an insulated enclosed volume of 27m^3 containing dry air at 23 degrees celsisus and 980mb, What is the specific volume and mass of the air sample
An object is placed to the left of a convex lens and on the optical axis. find the magnification of the image formed by the lens
Future space stations will create an artificial gravity by rotating. What rotation period will provide "normal" gravity
What is the rate at which water flows outA large tank supported high off the ground is filled with water to a depth of 2.05 m. What is the rate at which water flows out, in cubic meters per second
Three forces act on an object. A 2 N force acts due east and a 3 N force acts due north. If the net force on the object is zero, what is the magnitude of the third force?
Evaluate the magnitude of the apparent weight of a 84 kg astronaut 4500 km from the center of the Earth's Moon in a space vehicle accelerating toward the Moon at 3.1 m/s^2?
Type your question here Working on a bikeup side down, you spin the 70 cm wheel and you notice a pebble stuck in the threads goes by three times every second. What is the pebbles speed
A stone is dropped from rest into a well. The sound of the splash is heard exactly 2.00 s later. Find the depth of the well if the air temperature is 6.0°C
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