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A thin uniform rod of length 2m is bent at 90 degree angle from the mid point . find the centre of mass of bent road
an airport has runways only 161 m long. a small plane must reach a ground speed of 40 ms before it can become airborne.
An object 3.4 mm tall is placed 25cm from the vertex of of a convex spherical mirror. how far is the image from the vertex of the mirror
Calculate the electric force that exists between two objects that are 0.500m apart and carry charges of 0.00450C and 0.00240C. Is this force attractive or repulsive
A centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. Such a device is usedin medical laboratories, for instance, to cause the more dense redblood cells to settle through the less dense bloo..
An 8µF capacitor, a 13µF capacitor, and a 18µF capacitor are connected in series. What is their equivalent capacitance
How many excess electrons must be distributed uniformly within the volume of an isolated plastic sphere 24.0cm in diameter to produce an electric field of 1200N/C just outside the surface of the sphere
A 36.0 g bullet moving at 478 m/s strikes a 3.7 kg bag of flour that is on ice, at rest. The bullet passes during the bag, leaving at 255 m/s. How fast is the bag moving when the bullet exits.
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 12 m/s at an angle 49 degrees; What is the maximum height the ball goes above the ground
A parallel-plate capacitor has an area of 100 x 100?m^2. Calculate the capacitance values for two distances between the electrode plates: 1 and 0.5 µm. The medium is air. If the bias (voltage) in (a) is 3V, what is the attractive force?
Suppose the highway is icy and the coefficient of friction between the tires and pavement is only one-third what you found in part A. What should be maximum speed of the car so it can round the curve safely?
If 15 g of radon gas with a half-life of 4 days is present in a balloon at t = 0, what is the mass of radon gas present
The heating element of a clothes dryer has a resistance of12.3Ω. A voltage of 240 V is connected across the heatingelement. What is the current in the heating element?
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