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Question1
A small object with a mass of 420 mg carries a charge of 40.0 nC and is pending by a thread between the vertical plates of a parallel-plate capacitor. The plates are unconnected by 4.00 cm. If thread makes an angle of 13.0° with the vertical, what is potential difference between those plates?
Question2
The two vectors have equal magnitudes of 11.8 m and angles are θ1 = 27° and θ2 = 104°. Find out (a) x component and (b) y component of their vector sum, (c) the magnitude of, and (d) the angle makes with the positive direction of the x axis.
Question3
A 0.14- ball is placed in a shallow wedge with an opening angle of 160. For each contact point between the wedge and the ball, determine the force exerted on the ball. Suppose the system is frictionless. Conclude the Contact force 1.
A hydraulic lift in a garage has two pistons: a small one of cross-sectional area 3.60cm2, If this lift is designed to raise a 3300-kg car, what minimum force must be applied to the small piston
An iron bolt of mass 70.0 g hangs from a string 35.2 cm long. The top end of the string is fixed. Find the magnetic force on the bolt
A fire truck has a siren with that generates a sound with a frequency of 8562 Hz. what frequency will you observe
A ball is thrown horizontally from the top of a 85 m building and lands 140 m from the base of the building. What is the vertical component of the velocity just before the ball hits the ground in m/s
A spaceship of mass 2.30×106kg is cruising at a speed of 5.30×106m/s when the antimatter reactor fails, What is the speed of the third piece
A parallel plate capacitor has a capacitance of 4.5 µF when filled with a dielectric. What is the dielectric constant of the dielectric
One electron collides elastically with a second electron initially at rest. After the collision, the radii of their trajectories are 1.50 cm and 2.90 cm, Determine the energy (in keV) of the incident electron
W hat are underwater angles of refraction
A lens produces a magnification of -1.8 when an object is placed 2.5 cm from the lens. compute the focal length of the lens?
Find the charge-to-mass ratio of an unknown point charge that is repelled strongly enough from a single electron to be suspended motionless against its own weight
Two electric dipoles with charges +Q, where Q = 5 mC, Find the magnitude of the electric force between the two dipoles.
The radar system at an airport broadcasts 15 GHz with 150 kW. An approaching airplane with a 34 m^2 cross section is 24km away. Assume that the radar broadcasts uniformly in all directions and that the airplane scatters microwaves uniformly in all di..
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