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Solve the given questions:
Question 1: Piles of snow on slippery roofs can become dangerous projectiles as they melt. Consider a chunk of snow at the ridge of a roof with a pitch of 26.
Part A: What is the minimum value of the coefficient of static friction that will keep the snow from sliding down?
Question 2: As the snow begins to melt, the coefficient of static friction decreases and the snow eventually slips. Assuming that the distance from the chunk to the edge of the roof is 5.5m and the coefficient of kinetic friction is 0.20,
Part A: Calculate the speed of the snow chunk when it slides off the roof if the edge of the roof is 13.0m above ground, what is the speed of the snow when it hits the ground?
Please provide clear step by step solution with notes on concepts and equations being used.
The intensity of an earthquake waves passing though the Earth is measured to be 2.0 x 10^6 J/m^2xs at a distance of 48km from the source. What was its intensity when it passed a point only 1.0km from the source
An object placed 11.00 cm from a concave spherical mirror produces a real image 8.40 cm from the mirror. If the object is moved to a new position 20.0 cm from the mirror, what is the position of the image?
Heat is another word for thermal energy. Dissimilar materials at the same temperature can contain different amounts of heat.
A 2.3 µF capacitor and a 5.3 µF capacitor are connected in parallel across a 320 V potential difference. Calculate the total energy in joules stored in the capacitors
An electron, initially at rest, is accelerated through a potential difference of 550 Volt. Evaluate the speed of the electron due to this potential difference
With the power supply disconnected, the dielectric material is removed and the potential difference between the plates is measured to be 500 V. What is the dielectric constant of the material that was at first used to fill the gap between the plates.
A 260-kg piano slides 4.2m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40.
The great, grey-green, greasy Zambezi River flows over Victoria Falls in south central Africa. what is the velocity of the water when it hits the bottom
You may also assume that v_0 gg sqrt{2gL}, so that the change in hammer's gravitational potential energy, as it drives the nail into the block, is insignificant.
A beam of light is polarized in the horizontal direction and has an intensity I. It then passes through a polarizer oriented at an angle of 39 degrees from the horizontal direction. What fraction of the original intensity I pass through this polarize..
two equal-length springs have a stiffness ka300nm and kb200nm are nested together in order to form a shock absorber. if
A man is lifting a 210 Newton object. His spine and back are a uniform rod of weight at 320 Newton. Evaluate what is Compression force
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