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I need help for question 2, 3 and 4. I can handle question 1. The dateline is within 12 hours. Hope this is possible.
A rectangular block of ice 9.00 m on each side and 0.7 m thick floats in sea water. The density of the sea water is 1025kg/m3. The density of ice is 919kg/m3. How high does the top of the ice block float above the water level.
The 500[m] Short Track speed skating Olympic world record is 39:937[sec] held by American JR Celski. Calculate JR's average speed in [miles=hr] during his record- setting performance.
A person 1.7 m tall is standing 2.50m in front of a camera. Find the magnification and the height of the image on the film
Calculate the horsepower needed for a 1,114 kg car to climb up to an altitude of 1,097.91 m from sea level in 1.81 hours
A potential difference is applied between the electrodes in a gas discharge tube. In 1.7 s, 3.2 1016 electrons, What is the current in the tube
To prevent damage to floors (and to increase friction), by what factor does the tip reduce the pressure exerted by the crutch
Race tracks use walls which will compress when a car hits them at a high rate of speed. Find the spring constant of the wall
An elevator has mass 540 kg , not including passengers. What is the maximum number of passengers that can ride in the elevator
A .5Kg solid mass is totally submerged in water while suspended from a spring balance. Calculate the reading on the spring balance
You are walking along a small country road one foggy morning and come to an intersection. While you are crossing, you hear an ambulance siren, At what speed is the ambulance traveling
A metal must absorb radiation with a minimum frequency of 1.94 e15 Hz before it can emit an electron from its surface via the photoelectric effect, find the speed of the photo-electrons
Four point charges have the same magnitude of 2.3 × 10-12 C and are fixed to the corners of a square that is 3.8 cm on a side, Determine the magnitude of the net electric field that exists at the center of the square
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