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What is "Archimedes Principle"? A material has a mass of 45 grams and a volume of 40 milliliters. What is the material's density? Would the material sink or float in water at a temperature of 20 degrees Celsius? Explain.
Earthquakes generate sound waves inside Earth. Unlike a gas, Earth can experience both transverse (S) and longitudinal (P) sound waves. how far away did the earthquake occur
Imagine holding the above plastic block under water. When released, what is the upward acceleration of the block
A 230-µF capacitor and a 40m H inductor are in series with a 345 O resistor. What is the impedance at the resonant frequency
A thick-walled hollow cylinder (inner radius=47 cm, outer radius=66 cm) rolls down a 7° incline. If it starts with a speed of 1.9-m/s, what is its speed after it has travelled 16 m? (m/s).
A cannon tilted up at a 28? angle fires a cannon ball at 70m/s from atop a 22m -high fortress wall. What is the ball's impact speed on the ground below
A ball with m = .5 kg is thrown from the building (40m height) withinitial velocity 15 m/s downwards, find time it takes to reach the maximum height
An object with mass m1 = 5.90 kg, rests on a frictionless horizontal table and is connected to a cable that passes over a pulley, Find the magnitude of the acceleration of each object
A spaceship and an asteroid are moving in the similar direction away from Earth with speeds of 0.76c and 0.40c, respectively. What is the relative speed between the asteroid and the spaceship?
Transverse waves with a speed of 50.0 m/s are to be produced on a stretched string. A 5.00-m length of string with a total mass of 0.0600 kg is used. (a) What is required tension in the string? (b) Calculate the wave speed in the sting if the tension..
The angle of incidence at a solid/liquid boundary is 75.9°, and the index of refraction of the solid is n = 1.50. What is the largest index of refraction that the liquid can have
In a magnetic field with B=0.50 T, for what path radius will an proton circulate at 0.10 to the speed of light? What will its kinetic energy be? What will change if we replace a proton with a neutron? Why?
point charges q1 q2 and q3 are fixed at the vertices of an equilateral triangle whose sides are 2.40 m long. find the
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