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Two blocks of weights 45.0 and 83.0 N are connected by as massless string and slide down an inclined plane making an angle of 31.0 deg. to the horizontal. The cofficient of kinetic friction between the lighter block and the plane is 0.24 and that between the heavier block and the plane is 0.33. Assuming that the lighter block ``leads'', find the magnitude of the lighter block's acceleration.
One of the most powerful cranes in the world operates in Switzerland. It can slowly raise a load of M = 5230.0 tonnes to a height of h = 12.0 m, How much work is done by the crane
A laser pulse has an energy of 25 J and a beam radius of 2 mm. The pulse duration is 6 ns and the energy density is constant within the pulse. What is the spatial length of the pulse
An ultralight plane and pilot have a total mass of 156 kg. what is the net force acting on the plane and pilot
An alpha particle (helium nucleus, charge 2e) starts from rest and travels a distance of 1.88 cm under the influence of a uniform electric field of magnitude 12.2 kV/m
A 115 V fish-tank heater is rated at 120 W, Calculate the current through the heater when it is operating
A rectangular block of ice 12 m on each side and 1.3 m thick floats in sea water. The density of the sea water is 1025-kg/m3. The density of ice is 917 kg/m3. How many penguins of mass 26 kg each can stand on the ice block before they get their fe..
A 743 pF capacitor is charged to 130 V and then quickly connected across a 172 mH inductor.What is the resulting frequency of oscillation
One trajectory that can be used to send spacecraft from Earth to Mars is an elliptical orbit that has Sun at one focus, its perihelion at Earth, Find the semimajor axis of the ellipse
What is the electric potential at the center of a hollow metal sphere of outside diameter 14. cm which holds a net charge of 3.3 muC
Truck suspensions have "helper springs" that engage at high loads. When the main leaf spring is compressed by a distance y0, What is the compression of the leaf spring for a load of 5.00 x 10^5 N
A bullet is shot vertically up with v0 from ground level. The definition of vertical is by a plumb bob, find the location where the bullet returns to the ground
What is the total charge on Earth's surface implied. explain the strength and direction of an electric field.
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