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A stockroom worker pushes a box with mass 60.0kg on a horizontal floor with a constant speed of 2.50m/s. The coefficient of kinetic friction betweeen the box and the floor is 0.150. How far does the box slide after the worker stops pushing?
a wrecking yard inventor wants to pick up cars by charging a 0.400 m diameter ball and inducing an equal and opposite
how far is this point horizontally from the end of the ramp. A skateboarder shoots off a ramp with a velocity of 6.2 m/s, directed at an angle of 61° above horizontal. The end of the ramp is 1.5 m above the ground.
When it rains water vapour in the air condenses into liquid water and energy is released. How much energy is released when 0.0244m of rain falls over an area of 2.59 x 10^6 m^2? If the average energy needed to heat one home for a year is 1.40 x 10^11..
You land on a new planet with radius 5000km. You measure the freefall acceleration due to gravity to be 8.5m/s^2 at the surface
a particle of mass 2kg moves along axis x through the region in which its potential energy u(x) varies, what force acts on it at this position
Calculae the flow rate ( in grams per second) of blood in the aorta if the flow speed is 42 cm/s.
A battery with an emf of 12 volts is coonected to a 60 watt light bulb and an ammeter. The ammeter reads 75 mA
Identical samples containing 32P are measured for a period of 1 hr in a counter having an efficiency of 44 percent and a negligible background. From a large number of observations, the mean number of counts in 1 hr is (2.93 x 10^4)
A 29 cm long solenoid, 1.8 cm in diameter, is to produce a 0.24 T magnetic field at its center. If the maximum current is 5.7 A, how many turns must the solenoid have
At the top of a 30m hill is a 5kg mass. It is loaded into a spring cannon. What is the ration of Energy before/Energy after
Monochromatic light with wavelength 570nm passes through a circular aperture with diameter 7.00?m. What is the diameter of the Airy disk on the screen
(a) Construct the wave function for hydrogen in the state n=4, l=3, m=2. Express your answer as a function of the spherical coordinates (r,theta,phi). (b) Find the expectation value of r in this state.
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