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A lamp (R = 152 Ω), an electric heater(R = 26 Ω), and a fan (R =52 Ω) are connected in parallel across a 120 V line.
a) Compute the current in the lamp.
b) What is the voltage across the fan?
c) Compute the power expended in the heater
d) Compute the total current supplied to the circuit.
You dip your finger into a pan of water twice each second,producing waves with crest that are separated by 0.11 m. Determine the frequency of these waves
A 100 pF capacitor is charged to a potential difference of 70 V, and the charging battery is disconnected. what is the capacitance of this second capacitor
A VW Beetle goes from 0 to 60 mi/hr with an acceleration of +2.35 m/s2. Find the acceleration (in m/s2) of the dragster
question a proton has 1836 times the rest mass of an electron. at what speed will an electron have the same momentum as
A spring with 49 N/m hangs vertically next to a ruler. The end of the spring is next to the 17-{rm cm} mark on the ruler. If a 2.0-{rm kg} mass is now attached to the end of spring, where will the end of the spring line up with the ruler marks.
Calculate the edge length of a cube that has the same volume as a sphere of radius 4.0 cm. How much greater is the surface area of the cube than that of the sphere
A 2.0 wood block is launched up a wooden ramp that is inclined at a 31 angle. The block's initial speed is 5.0 . The coefficient of kinetic friction of wood on wood is muk= 0 .2 part A What vertical height does the block reach above its starting poin..
A 0.14- kg block on a wooden table is given a sharp blow with a hammer. The block then slides across the table to a stop. How far does the block go
A 50.0-kg child stands at the rim of a merry-go-round of radius 1.75 m, rotating with an angular speed of 3.10 rad/s. What is the child's centripetal acceleration
A vertical spring stores 0.962 J in spring potential energy whena 3.5-kg mass is suspended from it.(a)by what multiplicative factordoes the spring potential energy change if the mass atttached tothe spring is doubled?(b)verify your answer to part (a)..
A piece of cheese with a mass of 1.30kg is placed on a vertical spring of negligible mass and a force constant k= 1600 N/m that is compressed by a distance of 16.2cm. how high does the cheese rise from this initial position
In the dangerous "sport" of bungee-jumping, a daring student jumps from a hot-air balloon with a specially designed elastic cord attached to his waist, Calculate the required force constant of the cord
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