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In a television picture tube, electrons strike the screen afterbeing accelerated from rest through a potential difference of 33000V. The speeds of the electrons are quite large, and for accurate calculations of the speeds, the effects of special relativity mustbe taken into account. Ignoring such effects, find the electron speed just before the electron strikes the screen.
an electromagnetic wave strikes a 1.91-cm2 section of wall perpendicularly. the rms value of the waves magnetic field
If a 12 V battery is used to charge this capacitor, what is the total charge stored what is the magnitude of the electric field between the plates what is the energy stored on the capacitor
a 1kg object falls form a height h240m with initial velocity of 14ms penetrating into sand a distance of .2m. find the
An AC generator supplies an rms voltage of 110 V at 60.0 Hz. It is connected in series with a 0.750 H inductor, a 5.50 ?F capacitor, What is the rms current through the resistor
a boy weighing 3.9 102 n jumps from a height of 1.80 m to the ground below. assume that the force of the ground on his
A 2.0 mL syringe has an inner diameter of 4.0 mm, the needle inner diameter of 0.21 mm, and a plunger pad diameter (where you place your finger) of 1.20 cm. A nurse uses the syringe to inject medicine into a patient whose blood pressure is 140/100. S..
A coil has an inductance of 0.05 H and a resistance of 52 O. The coil is connected to a 6.0-V battery. After a long time elapses, the current in the coil is no longer changing. What is the rate of energy dissipation in the coil
A torsion pendulum is made from a disk of mass m = 7.1 kg and radius R = 0.71 m. What is the angular frequency of oscillation of this torsion pendulum
a neutron passes two points 1.0 meter apart in 1.0 microsecond. calculate the neutrons energy in units of both joules j
A weather balloon contains 12.0 m3 of hydrogen gas when the balloon is released from a location at which the temperature is 22.0°C, what is the new volume of the balloon
A 60 cm long steel rod with a diameter of 4 cm is mated to a 40 cm long Cu rod with the same diameter. the unmated end of the steel rod( not at the interface) is connected to a 140 degrees C heat source, while the far end of the Cu( not at the int..
An ore sample weighs 17.0 N in air. When the sample is suspended by a light cord and totally immersed in water, Find the total volume of the sample
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