Roll before reversing direction
A hollow sphere is rolling along a horizontal floor at 5.0 m/s when it comes to a 30.0 degree incline. How far up the incline does it roll before reversing direction?
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While standing at a crosswalk, you hear a frequency of 560 Hz from an approaching police car. After the police car passes, its frequency is 480 Hz. What is the speed of the police car? (speed of sound = 340 m/s)
A 0.300-kg mass, attached to the end of a 0.750-m string, is whirled around in a smooth level table. If the maximum tension that the string can withstand is 250 N, then what maximum linear speed can the mass have if the string is not to break?
You are driving a 3000 kg car at a constant speed 20 m/s along an icy road. While approaching a traffic light, it turn red. You slam on the brakes and come to a complete stop. The skid marks are 20 m long. What is the force of friction between the
If the create has a mass of 60 and is 1.6 tall and 0.80 in depth and width, what is the minimum force needed to make the crate start tipping? (Assume the center of mass of the crate is at its center and static friction great enough to prevent slip
Three moles of an ideal monatomic gas are at a temperature of 398 K. Then 2131 J of heat is added to the gas, and 736 J of work is done on it. What is the final temperature of the gas?
Ignoring the container and the equilibrium vapor pressure of the liquid at 50.0 degree C, find the ratio of the mass of steam to the mass of ice. The specific heat capacity of steam is 2020 J/(kg C ).
For no apparent reason, a poodle is running at a constant speed of 3.40 m/s in a circle with radius 2.8m. Let v1 be the velocity vector at time t1, and let v2 be the velocity vector at time t2 For change in t1 = 0.5s calculate the magnitude (to fo
An electron with kinetic energy 1.20 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 25.0 cm. Find the following values.
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