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A Physics student in lab is pushing a block, of mass 9.5 kg, on a rough surface, with a coefficient of static friction of 0.2. What is the force of friction that must be over come to move the block?
The Department of Homeland Security discovered that 10.0 kg of nitrogen (N2) was mixed with 3.82 kg of a possibly toxic unknown gas.- Determine the molecular mass of the gas mixture.
When a 29.0-V emf device is placed across two resistors in series, a current of 10.0 A is flowing in each of the resistors. compute the magnitude of the larger of the two resistances
The speed of an aircraft is sometimes expressed as a Mach number: Mach 1 means that the speed is equal to the speed of sound. If you wish to determine the speed of an aircraft going Mach 2.2, for example, in meters per second or miles per hour
To balance a very light rod when a down force is applied at a point 0.77m to the left of a supporting fulcrum (pivot point), What is the magnitude of the downward force
q. a woman walks 252. m in the direction 65.0deg east of north then 212. m directly east.a find the final displacement
an 8.70kg block slides with an initial speed of 1.84 ms down a ramp inclined at an angle of 28.2 with the horizontal.
Each surface exerts a force on the bottle that is perpendicular to the surface. What is the magnitude of each of these forces.
Let 25.5 Joule of heat be added to a particular ideal gas. As a result, its volume changes from 54.0 to 118.8 cm3 while the pressure remains constant at 1.0 atm. Find the molar specific heat at constant pressure
How long does it take the man to reach his in-laws- A man begins a car trip to visit his in-laws. The total distance is 60 miles, and he starts off at a speed of 60 miles per hour. After driving exactly 1 mile, he loses some of his enthusiasm for t..
A mixture of ethyl alcohol (molecular mass = 46.1 u) and water (molecular mass = 18.0 u) contains one mole of molecules. What mass m of water does it contain
Brain injuries in auto accidents. Brain injuries generally occur any time the brain's acceleration reaches 100 g for even a short time. Find the maximum speed with which the car can strike the barrier without causing brain injury, using an airbag
Consider charged particles Q1= 70.0 μC, Q2= 48.0 μC , Q3= -80.0 μC which are placed in a straight line along the x-axis. Q2 is placed in the center at a distance of 0.350 m from each of the others, and Q3 is also 0.350 m from some point P, as sh..
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