(a) What are the S.I. units for acceleration and electric field? (b) A stone is dropped from a height of 17.6 m above th

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A What Are The S I Units For Acceleration And Electric Field B A Stone Is Dropped From A Height Of 17 6 M Above Th 1 (149.83 KiB) Viewed 38 times

(a) What are the S.I. units for acceleration and electric field? (b) A stone is dropped from a height of 17.6 m above the ground. Neglecting air resistance, determine its velocity when it hits the ground. (c) A 350-kg sailboat has an acceleration of 0.62 ms-2 at an angle of 64° north of east. Find the magnitude and direction of the net force that acts on the sailboat. (d) A 50 kg crate rests on a level floor. If the coefficient of static friction , between the crate and the floor is 0.7, what horizontal pushing force is required to just start the crate moving? (e) A bowling ball (mass = 7.2 kg, radius = 0.11 m) and a billiard ball (mass = 0.38 kg, radius = 0.028 m) may each be treated as uniform spheres. Calculate the magnitude of the maximum gravitational force that each can exert on the other. (f) A 75.0 kg skier rides a 2830 m lift to the top of a mountain. The lift makes an angle of 14.6° with the horizontal. Determine the change in the skier's gravitational potential energy. (g) A steel section of a pipe has a length of 65 m and a temperature of 18 °C when it was installed. What is its change in length when the temperature drops to -45 °C? (h) The right-most key on a piano produces a sound wave that has a frequency of 4185.6 Hz. Assuming that the speed of sound in air is 343 ms¹, find the corresponding wavelength. (i) A capacitor with a potential difference of 1.8 V across it holds a charge of magnitude 0.18 μC on each plate. Calculate the capacitance of the device. (i) Location A is 3.00 m to the right of a point charge q. Location B lies on the same line and is 4.00 m to the right of the charge. The potential difference between the two locations is VB - V₁ = 45.0 V. Determine the magnitude of the charge. (k) Calculate the peak current that passes through a 2400 watt heater powered by the mains supply (Vrms = 240 V).