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A 2kg box is released, from rest, at the top of a rough circular track of radius 10cm. As the box reaches the bottom of the track, it is moving at 15 m/s. using g= 10 m/s^2, calculate the work done by all resistive forces (such as friction) during this slide from top to bottom.
In a diffraction experiment a point (pinhole) source of wavelength 600 nm is to be used. Determine whether Fresnel or Fraunhofer diffraction applies
What's the magnitude of the electric field at an on-axis point a distance of .7m from a ring of charge with a total charge of .8microC
Charge Q = 17E-8 C is placed in the origin. Location A is -3.00m from the charge while location B is 2.00m from the charge. A) Find the potential difference VB - VA between the two points. B) Which point is at the higher potential? Type either "Po..
A ball is tossed from an upper story window of a building. Compute the height from which the ball is thrown.
A crane at a construction site lifts a concrete block with a mass of 440 kg from the ground to the top of a building with a height of 15.0 m, If the duration of the lift was 3.00 minutes, then what was the average power performed by the crane
approsimate the terminal speed of a wooden sphere (density 0.890 g/cm3) falling through air, if its radius is 9.00 cm and its drag coefficient is 0.500. (The density of air is 1.20 kg/m3.)
A 7.9-N force pulls horizontally on a 1.6-kg block that slides on a smooth horizontal surface. What is the acceleration of the blocks
A hot-air balloon is ascending at the rate of 14 m/s and is 57 m above the ground when a package is dropped over the side. How long does the package take to reach the ground
A heat engine has an efficiency of 61.5% and it exhausts 7500 J of waste heat into the environment. How much work is performed by the previous heat engine
A star is moving away from Earth at a speed of 2.4 X 10^8 m/s. find the wavelength as measure by an Earth observer
The parallel metal plate of a capacitor is seperated by a distance of 0.5cm and is connected to a 90v battery. Find an electric field between them and the surface charge density.
The air inside a bicycle tire pump has 151 joules of work done on it as 70.7 joules of heat is conducted away from it
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