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The heating element of a toaster is a 5.4-m length of nichrome wire of diameter 0.48 mm. The resistivity of nichrome at the operating temperature of the toaster is 1.3 x 10-6 Ω . m. The toaster is designed to operate at a voltage of 120 V. How much power does it draw in normal operation?
q1. two railroad cars each of mass 6300 kg and travelling 88 kmh in opposite directions collide head-on and come to
A concave shaving mirror has a focal length of 33 cm. Calculate the image position of a cologne bottle placed in front of the mirror at a distance of 93 cm. how large it is with respect to the object
Two long, parallel wires carry currents of 0.245 A in the same direction. If the wires are 0.034 m apart, what is the force per unit length between the wires
A ship sets out to sail to a point 148km due north. An unexpected storm blows the ship to a point 109km due east of its starting point.
The mass of a robot is 3780 kg. This robot weighs 3540 N more on planet A than it does on planet B. What is the difference MA - MB in the masses of these planets
What is the temp of the gas
A shaft is turning at (65.0 rad./s) at time zero. Thereafter, its angular acceleration is given by:where (t)is the elapsed time. Find its angular speed at (t=3.0 s).
A racquetball with a diameter of 5.6 cm and a mass of 42 g is cut in half to make a boat for American pennies made after 1982. How many pennies can be placed in the racquetball boat without sinking it
A thin, light wire is wrapped around the rim of a wheel. The wheel rotates without friction about a stationary horizontal axis that passes through the center of the wheel. The wheel is a uniform disk with radius 0.28. An object of mass 4.0 is suspend..
A window washer pushes his scrub brush up a vertical window at constant speed by applying a force as shown in the figure below.The brush weighs 12.7 N, θ =54.5° and the coefficient of kinetic friction isμk = 0.154.
Robert tell is said to have shot an apple off his sons head with an arrow. If the arrow was shot with an initial speed of 35m/s and the boy was 24m away, at what launch angle did robert aim the arrow
in many locations such as lake washington in seattle floating bridges are preferable to conventional bridges. such a
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