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A 0.67 kg person stands on a lightweight diving board supported by two pillars, one at the end of the board, the other 1.10 m away. The pillar at the end of the board exerts a downward force of 828 N.
(a) How far from that pillar is the person standing?
(b) Find the force exerted by the second pillar.
An entomologist examining an insect adjusts the position of hermagnifying glass so that the image of the insect is at her nearpoint, what is the approximate distance between the insect and the magnifyingglass
q1. two alpha particles helium nuclei each consisting of two protons and two neutrons have the3 electrical potential
which type of galaxy mostly consists of a collection of older red stars that are located in the center with blue and
A storage tank contains 21.6 kg of nitrogetn (N2) at an absolute pressure of 3.65 atm, What is the volume of the tank
An electron is accelerated horizontally from rest in a television picture tube by a potential difference of 5500V. It then passes between two horizontal plates 6.5cm long and 1.3 cm apart that have a potential difference of 250V. At what angle wil..
Leigh is doing a knee extension exercise using a 100 N dumbbell strapped to her ankle 40 cm from her knee joint. For this position, what torque is created by the dumbbell about her knee joint axis
While taking photographs in Death Valley on a day when the temperature is 52.0°C, What current does he register there if the temperature is -88.0°C
In the Bohr model of the hydrogen atom, the electron revolves in acircular orbit around the nucleus. obtain the centripetal acceleration of the electron
a particle is thrown upwards from the ground. it experiences constant air resistance which produces a retardation of 2
A pulsar is a rapidly rotating neutron star that emits a radio beam the way a lighthouse emits a light beam. What is the pulsar's angular acceleration
An unmarked police car travelling a constant 95 km/h is passed by a speeder travelling 145km/h. Precisely 1 s after the speeder passes, the police officer steps on the accelerator.
a transition in a nucleus consists of changing a three-quarks group uud to a udd collection. this transition is
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