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A 150-W lamp is placed into a 120-V AC outlet. What is the resistance of the lamp?
A 42.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.28*10^2 m/s from the top of a cliff 140 m above level ground, What is the initial total mechanical energy of the projectile
Incident light of wavelength 400nm elite electrons having a maximum kinetic energy of 1.0ev from a material. a) what is the work function of the material in ev ? b) over what wavelength range of incident light will electrons be emitted from the mater..
A forward horizontal force of 12N is used to pull a 240N crate at constant velocity across a horizontal floor. What is the coefficient of friction
Susan (mass=52 kg) rides upward in an elevator while standing on a bathroom scale. The scale reads 575 N. Calculate the resultant force acting on Susan
What is the amplitude of the oscillations . Could you think of a simple method for determining the focal length of a converging lens.
A gas expands while 502 J of energy is added to it as heat. The expanding gas does 422 J of work on its surroundings.
A toroidal solenoid has 550 turns, cross-sectional area 7.00cm2 , and mean radius 4.90cm, Calcualte the coil's self-inductance
The filament of an incandandescent light bulb is a very thin solid cylindrical shape, with a total length of 450 mm and a diameter of 0.45 mm. What is the peak wavelength emitted by this light bulb
A camera lens usually consists of a combination of two or more lenses to produce a good-quality image. How far to the right of the convex lens is the final image
R-134a is flowing at 1kg/s and throttled from 850 kPa and 40 C to - 40 C. Heat is gained at a rate of 1 kJ/s from the surroundings at 25 C
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 19.0 m/s at an angle 48.0 degrees; What is the vertical component of the ball's velocity right before Sarah catche..
A syringe has an area of 0.7 cm2 at its barrel and then narrows down to an area of 0.15 mm2 at the needle end. If a force of 4.6 N is applied to the syringe, what is the force produced at the tip of the needle?
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