Each year, an average person in the united states is exposed to a radiation level of
2...
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Physics, 22.06.2019 04:10
Atotal charge of β6.50 Β΅c is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 Γ 105 n/c, radially inward b) 6.49 Γ 105 n/c, radially outward c) 4.69 Γ 105 n/c, radially inward d) 9.38 Γ 105 n/c, radially outward e) 1.30 Γ 106 n/c, radially inward
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Physics, 22.06.2019 08:30
What is the primary force that suspension bridges use cables to hold their spans up? a. tension force b. resistance force c. normal force d. elastic force e. applied force
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Physics, 22.06.2019 18:30
Aballoon is rising vertically upwards at a velocity of 10m/s. when it is at a height of 45m from the ground, a parachute bails out from it. after 3s he opens his parachute and decelerates ata a constant rate 5m/s.when. (a) what was the height of the parachutist above the ground when he opened his parachute? (b)how far is the parachutist from the balloon at t=3s? (c)with what velocity does the parachutist hit the ground? (d)after how long does the parachutist hit the ground after his exist from the balloon?
Answers: 3
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