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The defenders of a castle throw rocks down on their attackers from a 11.5 m high wall. If the rocks are thrown with an initial speed of 13.2 m/s, how much faster are they moving when they hit the ground than if they were simply dropped?
a charged particle (q=1.6*10^-19C) enters a mass spectrometer with a speed of 2.5*10^6m/s, compute the mass of the charged particle
A fellow student of mathematical bent tells you that the wave function of a traveling wave on a thin rope isy(x,t)= 2.10mm cos[( 6.96rad/m )x+( 744rad/s )t]. Determine the average power transmitted by the wave
The 40 kg man in the roller coaster car is sitting on a bathroom scale. If he is travelling at 35.3 m/s at the point shown and the radius of vertical coaster track is 53 meters, to the nearest newton what does the scale read?
What mass can it support in water before sinking. Two concentric spherical shells with uniformly distributed masses M1 = kg and M2 = kg are situated as shown . Find out the magnitude Find the magnitude of the net gravitational force on a particle ..
A rocket traveling 1850 m/s away from the Earth at an altitude of 6800 km fires its rockets, at what rate must the gases be ejected
It is found that a uniform amount of electrical flux is going through each region of a Gaussian surface shaped like a cube. What amount of charge is there inside the sphere
A storage tank 30 m high is filled with gasoline. Calculate the force that acts on a square access hatch at the bottom of the tank measures .5 m by .5 m
a coin is placed 18.0 from the axis of a rotating turntable of variable speed. when the speed of the turntable is
A simple pendulum makes 137 complete oscillations in 3.20 min at a location where g = 9.80 m/s2. Find the period of the pendulum.
A probe in deep space is infested with alien bugs and must be blown apart so that the icky creatures perish in the interstellar vacuum. What is the velocity of the second piece after the explosion
A Styrofoam box has a surface area of 0.74 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, and the outside temperature is 27°C. If it takes 8.5 h for 5.0 kg of ice to melt in the container, determine the thermal cond..
If a mass is hung from a spring (whose spring constant is 2 pounds per foot) stretches the spring 0.4 meters (m), What is the force on the spring in Newtons (N)?,
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