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A ball of mass 8kg falls from a height of 100m . Neglecting air resistance, calculate its total energy after falling a distance of 40m
1. A uniform electric field E = 6500 N/C passing through a flat square area
A = 10m2
. What is the electric flux?
Find the current through each battery. 18 Ω 9 V- 3Ω 3 V I3=
Determine vector A x C if A = 5i - 4j and B = 5i + 2j
What happens if the filament of a single bulb fails (or if the bulb is removed from its socket)? Why?
A golf ball is driven with an initial velocity of 161 fps
upward at 30 ̊ to the horizontal from an elevated tee
64.4 feet above a level fairway. What horizontal
distance will the ball travel before hitting the fairway
a box starting from rest and slides down an inclined plane with uniform acceleration and travels 9 m in 3 s. in what time from rest will it acquires a velocity of 24m/s down the plane
1. A boy wants to throw a water balloon from a roof deck at a height of 3m from the street and hit the far side of the street. He throws the ball at 5 m/s at an angle of 45° to the horizontal. If Vboy = 0, what is the maximum height, h, reached by the balloon above the street?
A. h= 5.9 m B. h = 5.1 m C. h = 3.6 m D. h= 4.6 m
2.This time, suppose the boy gets a running start, vboy = 5m/s toward the street. What is the speed of the balloon, V balloon, when it hits the street
Assuming that a kilogram rat and a hundred kilograms elephant fell on the cliff at the same time, which of the two will reach the ground first if air resistance and surface area are neglected? Explain.
How does an electromotive force differ from a potential difference?
