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A fighter plane flying in the sky dives with a speed of 120 m/sec in a vertical circle of radius of 100 m. Mass of the pilot is 80 kg. Force with
which the pilot presses the seat at the highest position is :
1) 10720 N
2) 15000 N
3) 8000 N
4) 12720 N
A subway train starts from rest at a station and accelerates at a rate of 1.66m/s2 for 14.2s. Find the total distance covered
A 0.170 kg tumour is being irradiated by a radioactive source. Each decay of the radioactive source produces a particle with an energy of 0.450 MeV. find the activity of the radioactive source
the landing speed of an airplane is dependent on the air density. by what percentage must the landing speed be
An observatory has an 8-inch Celestron telescope. Estimate the diffraction limit of this telescope. Estimate the minimum size a feature on the surface of the Sun must have to be resolved by this telescope.
A transformer with a turns ratio (secondary/primary) of 1:14 is used to step down the voltage from a 120-V wall socket to be used in a battery recharging unit.What is the voltage supplied to the recharger?
A gymnast with mass m1 = 40 kg is on a balance beam that sits on (but is not attached to) two supports. The beam has a mass m2 = 110 kg and length L = 5 m. Each support is 1/3 of the way from each end. at first the gymnast stands at the left end of..
a 1.00 micro f capacitor c1 is charged by being connected across a 10v battery and charged to 10 micro c. it is then
You were stranded on a desert island with John, who wears glasses. He manages to start a fire. Is John nearsighted or farsighted? Explain how you know. Explain what nearsighted and farsighted mean, and how glasses correct the condition.
for a piece of material the steady-state flow across its thickness is 0.345x10-3 kgm2 h on the low pressure surface
What is the average magnitude of the Poynting vector 8.50 mi from a radio transmitter broadcasting is otropically (equally in all directions) with an average power of 260 kW?
A uniform solid disk with a mass of 40.0 kg and a radius of0.149 m is free to rotate regarding a frictionless axle. Forces of 90.0and 125 N are applied to the disk, as the figure demonstrates.
You are riding in a school bus. As the bus rounds a flat curveat constant speed, a lunch box with the mass 0.500kg, What is the speed of the bus
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