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a small welding machine uses a voltage source of 120 v at 60 hz when the source is operating it requires 1200 w of
a syringe of volume 20 ml has just been used and now lies empty on the doctors desk the pressure in the office is
an electron is initially moving at a speed of 1740 ms directly toward a long wire that has 200 a of current flowing
a long solenoid has 1580 turns in a length of 400 cm what current has to flow through the solenoid in order to generate
a circular wire loop of radius 0170 m carries a current of 900 ma and is placed in a 500 mt magnetic field as the
the electric field in a velocity selector is generated by two parallel plates separated by 500 cm with a potential
a distant galaxy emits light that has a wavelength of 4998 nm on earth the wavelength of this light is measured to be
a laser emits a narrow beam of light the radius of the beam is 39 mm and the power is 36 mw what is the intensity of
a sound wave with intensity 22 10-3 wm2 is perceived to be modestly loud your eardrum is 67 mm in diameter how much
the earth has a surface temperature around 270 k and an emissivity of 08 while space has a temperature of around 2 k
a cylinder with a piston is filled with ideal gas the gas temperature is held at 500k the cylinder is heated by an oven
a simple pendulum has a mass of 0150 kg and a length of 100 m it is displaced through an angle of 100deg and then
near earth the density of protons in the solar wind a stream of particles from the sun is 128 cm-3 and their speed is
a certain atom has atomic number z 21 and atomic mass number a 44a how many protons and neutrons are in the
a worker in a radiation lab recieves a whole-body radiation dose of 29 mrad her mass is 65 kg the radiation delivered
a car alarm is emitting sound waves of frequency 520hz you are on a motorcycle traveling directly away from the carhow
a particle moves in simple harmonic motion with a frequency of 260 hz and an amplitude of 600 cma through what total
a solar collector is placed in direct sunlight where it absorbs energy at the rate of 890 js for each square meter of
in the continuous-caster process steel sheets 253cm thick 205m wide and 110m long are produced at a temperature of
a solenoid with 1000 turns has a cross-sectional area of 70cm2 and a length of 25cm how much energy is stored in the
a circuit is pulled with a 16n force toward the right to maintain a constant speed v at the instant shown the loop is
a paper filled capacitor is charged to a potential difference of 21 v and then disconnected from the charging circuit
two plates of area 743 cm2 each are separated by a distance 523 cm calculate the capacitance of the capacitor in
a flexible circular conducting loop of radius 015m and resistance 40omega sign lies in a uniform magnetic field of 025t