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Q1. A person of mass 89.70 kg escapes from the burning building by jumping from a window situated 27.50 m above a catching net.
The acceleration of gravity is 9.80 m/s2.
If air resistance exerts a force of 118.2 N on him as he falls,
determine his speed just before he hits the net.
React in units of m/s
Q2. A student who weighs 470 N is wearing a backpack that weighs 85 N. The student is standing still on level ground.
(a) What is the magnitude of the net force on student?
(b) What is the magnitude of the contact force on the student by backpack?
(c) What is the magnitude of the contact force on the student by ground?
An alpha particle (m = 6.7 x 10^-27kg, q = +3.2 x 10^-19C) has a speed of 30km/s at point A and moves to point B where it momentarily stops. Only electric forces act on the particle throughout this motion. Find out the electric potential difference.
Write a general expression of the flux
Compute the scalar product V.F
What mass (in grams) of steam at 100 C must be mixed with 175 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 50.0 C.
What is frequency of the fork
What is Johns resultant displacement
What is the maximum amount of energy the incident electron can lose in elastically in this collision? What is left over energy of the electron.
A major league pitcher can throw a baseball in excess of 41 m/s. If a ball is thrown horizontally at this speed, how much will it drop by time it reaches a catcher who is 17m away from the point of release.
A capacitor is connected across the terminals of an ac generator that has a frequency of 370 Hz and supplies a voltage of 15 V. When a second capacitor is connected in parallel with the first one, the current from the generator increases by 0.27 A. D..
A car moves from a point located 26.0 m from the origin and at an angle of 35.0 from the x-axis to the point located 57.0 m from the origin and at an angle of 60.0 from the x-axis in 2.52 s.
Find graphically magnitude and direction of resultant force
The impact on light fixture swing
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