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Question: The mean diameters of X and Y, two planets in the same solar system, are 6.4 x 103 km and 1.2 x 104 km, respectively. The mass of X is 0.25 times the mass of Y. The value of g on Y is 8.8 m/s2. The mass of Y is 4.750 x 1024 kg. What is the escape speed on X?
An apple weighs 1.17 N. When you hang it from the end of a long spring of force constant 1.56 N/m and negligible mass, it bounces up and down in SHM. What is the unstretched length of the spring
Water runs out of the horizontal drainpipe at the rate of 120 liters per minute. It falls 3.20 m to the ground. Assume the water doesn't splash up, what average force does it exert on the ground? (1 liter = 1 kg.)
Two identical 19.1?kg spheres of radius 12.7cm are 35.7cm apart (center-to-center distance). If they are released from rest and allowed to fall toward one another, what is their speed when they first make contact
An object of mass 2.1 kg is moving in the negative x direction at a velocity of 2.6 m/s. What is the final velocity after the object has experienced the impulse
If the magnitude of the drift velocity of free electrons in a copper wire is 9.12 10-4 m/s, what is the electric field in the conductor
A laser emits a monochromatic beam of wavelength λ, which is reflected normally from a plane mirror, receding at a speed v. What is the beat frequency between the incident and reflected light?
A sphere of radius r =34.5 cm and massm = 1.80 kg starts from rest and rolls without slipping down a 30.0? incline that is 10.0 m long. Calculate its translational speed when it reaches the bottom
An iron wire has a cross-sectional area equal to 9.50 10-6 m2. Carry out the following steps to determine the drift speed of the conduction electrons in the wire if it carries a current of 8.0 A. Calculate the drift speed of conduction electrons in..
Under standard conditions, the density of air is 1.293 kg/m3 and that of helium is 0.178 kg/m3, What must be the minimum diameter of the spherical balloon
A pipe with a diameter of 2.88 cm is carrying 134 liters/minute of water with an overpressure (gauge pressure) of 3.65 atmospheres. Find the overpressure of the water in the pipe at the top of the building
An airplane propeller is rotating at 1250rpm. Compute the propeller's angular velocity
You are at a rock concert, and the sound intensity reaches levels as high as 100 dB. Calculate the amplitude of this oscillating force
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