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to empty a flooded basement a water pump must do work lift the water at a rate of 2kwif the pump is wired to a 240 volt
an electric motor rotating a workshop grinding wheel at a rate of 116 x 102 rpm is switched off suppose the wheel has a
a car initially traveling at 295 meter per second undergoes a constant negative acceleration of magnitude 190 ms2 after
three resistors of 80 w 12 w and 24 w are in parallel and a current of 20 amp is drawn by the combinationa calculate
an ohmic appliance is rated at 110 watt when it is connected to a 120 volt sourceif the power company cuts the voltage
a 32 ohm resistor is connected to four 15 volt batteriesfind the joule heat loss per minute in the resistor if the
on average an electric water heater operates for 16 hour each dayif the cost of electricity is 019 kwh determine the
a dentists drill starts from rest after 3 second of constant angular acceleration it turns at a rate of 23 x 104
a series r-l-c circuit of r 235 ohm l 0900 h and c 150 muf carries an rms current of 0280 amp with a frequency of
an 9 kilogram package in a mail-sorting room slides 250 meter down a chute that is inclined at 544 degree below the
an electric water heater is designed to produce 44 kw of heat when it is connected to a 240 volt source if the heater
the current in a refrigerator with a resistance of 85 ohm is 185 amp when the refrigerator is on calculate the power
a material is formed into a long rod with a square cross-section 050 centimeter on each side when a 160 volt voltage is
scientists in a laboratory produce a sound wave in a simulated environment air with a velocity of 416 meter per second
a cars starter motor draws 48 amp from the cars battery during startup if the startup time is 34 second determine how
two equal conducting spheres are located with their centers 014 meter apart one is given a charge of 6 x 10-9 c the
a particle having an electric charge q 320 x 10-19 c is injected into a magnetic field b 044 t with a speed of 161 x
a 079 meter long solenoid consisting of 1200 turns is used to generate a magnetic field 020 t determine how much
two parallel wires spaced a distance d apart experience an attractive force per unit length of 260 x 10-4 nm if the
a long straight wire carries a current of 190 ma obtain the magnitude of the magnetic field 15 centimeter from the
a solid cylinder is mounted above the ground with its axis of rotation oriented horizontally a rope is wound around the
the focal length of the eyepiece of a certain microscope is 19 millimeter the focal length of the objective is 775
assume cart 1 has mass 387 gram and initial velocity v10 821 meter per second and cart 2 has mass 980 gram suppose the
determine where is the near point of an eye for which a contact lens with a power of 295 diopters is