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Q.1 A rectangular barge, 8 m long and 2 m wide, floats in fresh water.
(a)Find how much deeper it floats when its load is a 400 kg horse (b) If the barge can only be pushed 18 cm deeper into the water before water overflows to sink it, how many 400 kg horses can it carry?
Q2. In experiment of concial pendulum. The radius of the horizontal circle is 25 cm, the mass of the bob is 52 kg, the length of the string is 100cm and the average period is 2.4 sec. What is the percent error of gravity?
To which, according to the rotational analog of Newton's second law, is the angular acceleration experienced by an object directly proportional?
Write down an expression for the mass of the nucleus
At one instant a bicyclist is 28.0 m due east of a park's flagpole, going due south with a speed of 11.0 m/s. Then 24.0 s later, the cyclist is 26.0 m due north of the flagpole, going due east with a speed of 11.0 m/s. For the cyclist in this 24.0 s ..
The alpha line in the Balmer series of the hydrogen spectrum consists of light having a wavelength of 6.56 ×10-7 meter. Compute the frequency of this light.
A 75 g, 31 cm long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 12 g ball of clay travelling horizontally at 2.1 m/s hits and sticks to a very bottom tip of the rod.
A stone has a mass of 6.0 x 10-3 kg and is wedged into the tread of an automobile tire, as the drawing shows. The coefficient of static friction between the stone and each side of the tread channel is 0.90.
After the ambulance passes, the observed frequency of the siren is 493 Hz. Conclude the ambulance's speeds from these observations.
An autographed baseball rolls off a 0.64m high desk and strikes the floor 0.61 m away from the desk. How fast was it rolling on the desk before it fell off? The acceleration of gravity is 9.80 m/s^2.
What mass (in grams) of steam at 100 C must be mixed with 175 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 50.0 C.
A wooden block weighing 7 N is at rest on top of a wooden desk. The coefficient of static friction between the block and the desk is 0.41. Find out the minimum horizontal force required to move the block if the following occurs.
Two point charges Q1=+5.00 nC and Q2= -3.00 nC are separated by 35.0cm. (a) What is the electric potential at a point midway between the charges? (b) What is the potential energy of the pair of charges? What is the significance of the algebraic si..
Chromium is produced by reacting its oxide with aluminium. If 354 g of Cr2O3 and 158 g of Al react to form 204 g of Al2O3, how many grams of Cr are formed.
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