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Q1. A rectangular block of ice 13 m on each side and 1.4 m thick floats in sea water. The density of the sea water is 1025 kg/m3. The density of ice is 917 kg/m3.
a) How high does the top of the ice block float above water level?
b) How various penguins of mass 16 kg each can stand on the ice block before they find their feet wet?
Q2. Light passes through a 230 lines/mm grating and is observed on a 1.0m wide screen located 1.1m behind the grating. Three bright fringes are seen on both sides of the central maximum.
Determine Maximum wavelength and Minimum wavelength?
An unstable particle having mass of 5.00x10^-27 kg is initially at rest. Find the rest masses of the fragments
How much work was done by the lift on the automobile.
A solid, frictionless cylindrical pulley with a mass of 3kg and a 0.420 m radius is used to draw water from a well. A 1.50kg bucket is attached to a cord that is wrapped around the pulley. If the bucket starts from rest at the top of the well and ..
A fully loaded station wagon has a mass of 1690 kg. If each of its four tires is inflated to a gauge pressure of 211 kPa, what is the total tire area in contact with road . What least distance are they from each other? The angle might be too large ..
We all know that your homes have primary voltage Vp 120V that comes to them, What type of transformer is needed to reduce the voltage
A heat pump uses an ideal Carnot cycle to heat a house. The outside air has a temperature of 294 K, In the scenario described in the previous question, how much energy is transferred out of the outside air
A charge of -330e is uniformly spread through thevolume of a sphere of radius 1.95 cm. What is the volume charge density in that sphere
imagine a hole is drilled down to the center of the earth. a small mass m is dropped into the hole. find the speed of the mass just as it reaches the earth's center
From the shore of a frozen lake, a QB throws a 2 kg football at a velocity of 20 m/s. How far does the person slide before they come to a stop
The human eye can detect light intensities as small as about 8 10-23 W/m2. How does this force compare to the weight of an electron
In a cement mixer, cement, gravel and water are mixed by tumbling in a slowly rotating drum. Calculate the maximum angular speed for which the materials will mix
Two billiard balls are initially traveling toward each other at speeds of 1.05 m/s for ball 1 and 3.40 m/s for ball 2. Find their final velocities
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