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Question: Styrofoam has a density of 150 kg/m3. What is the maximum mass that can hang without sinking from a 50-cm diameter Styrofoam sphere in water? Assume the volume of the mass is negative compared to that of the sphere
Rework your solution from the beginning and check each step carefully.
An electric field of intensity 2.5 kN/C is applied along the x-axis. Calculate the electric flux through a rectangular plane 0.350 m wide and 0.70 m long if the following conditions are true.
A 1kg ball is falling to the floor. When it is 0.7m above thefloor, it's potential energy exactly equals its kinetic energy. What is its speed when it reaches the ground
A car dealer claims that his product will accelerate at a constant rate from rest to a speed of 200 km/hr in 8s. What estimated distance will the car travel.
Three radio-equipped plumbing vans are broadcasting on the samefrequency f0. Van 1 is moving east of van 2 with thespeed v, What is the frequency of each van as received by theothers
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of 0.103 N, determine the positive charge in coulombs on the other
An object is oscilliating on a spring with a period of 4.60 s . At time t= 0.00 s the object has zero speed and is at x = 8.30 cm
a mass m is attached to a string of length l and released when the string is horizontal, causing the mass to fall in a circular path. determine the maximum value of the tension force in the string
An astronaut is taking a trip to a planet 20 c · years away from Earth. For the astronaut to age only 16 years through the journey how fast must she travel?
Newton’s Third Law of Motion states that when one object exerts a force on a second object, the forces are __ Equal in magnitude and equal in direction. Equal in magnitude and opposite in direction
A 1.6-rm MHz sound wave travels through a pregnant woman's abdomen and is reflected from the fetal heart wall of her unborn baby. The heart wall is moving toward sound receiver as the heart beats.
Concept Simulation 5.1 reviews the concepts that are involved in this problem. A child is twirling a 0.0282-kg ball on a string in a horizontal circle whose radius is 0.109 m. by what factor does the centripetal force increase
A crate on a motorized cart starts from rest and moves with a constant eastward acceleration of a = 2.50m/s^2. What is the instantaneous power supplied by this force
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