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You live in the ground floor of a high rise apartment block. The over head water tanks which supply water to all the apartments are situated on the rooftop. When water flow through the taps in your apartment is low, you go to inspect the water level in the tank on the rooftop.
You check the water level in the tank and do the needful [get the tank filled]. How can you sort out the problem of checking the water level in the tank without going to the rooftop every time the water flow is low or water stops flowing?
The outside dimensions of a cylindrical soda can are reported as 12.259cm for the diameter and 5.52cm for the height. How many significant figures will the total outside area have
A satellite has a mass of 5839 kg and is in a circular orbit 4.10 × 105 m above the surface of a planet. The period of the orbit is 1.7 hours. The radius of the planet is 4.88 × 106 m. What would be the true weight of the satellite if it were at rest..
A 475 kg concrete beam should be raised by a 10.0 m from the ground. How much power is needed to do the job in 24 s
Florence, who weighs 120 lbs, stands on a bathroom scale in an elevator. What would the scale read when the elevator is accelerating downward at 2m/s2.
What is the frequency of a spring with spring constant 420 N/m that has attached a mass of 3.5 kg and initially displaced 0.25 meters. what is the maximum kinetic energy this mass obtains
a vector force with components 125 acts at the point 321a find the vector torque about the origin due to this forceb
a circular plastic disk with radius r 2.79 cm has a uniformly distributed charge q 4.69 x106e on one face. a circular
Now the gymnast (not holding any additional mass) walks directly above right support. What is the force the left support exerts on beam.
After some heat transfer from the water to the air and the surroundings, both the air and water are measured to be at 44°C. Determine
Mars orbits the Sun at a mean orbital radius of 228 Gm (1 GM =109 m) and has an orbital period of 687 d. Earth orbitsthe Sun at a mean orbital radius of 149.6 Gm.
An alpha particle and beta^ {-} particle, each with kinetic energy 35 {rm keV}, are sent through a 1.10 {rm T} magnetic field. The particles move perpendicular to the field. Find the curvature radius for alpha particle's trajectory. Hint: The kine..
In a certain material, light travels at a speed of 2.00 x10 8 m/s. If the reflected light is polarized, what is the angle of A) reflection, B) refraction and C) incidence? Suppose the incoming ray is in air.
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