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A toaster rated at 1 050 W operates on a 120-V household circuit and has a 4.00-m length of nichrome wire as its heating element. The operating temperature of this element is 320°C. What is the cross-sectional area of the wire?
A uniform cylinder whose mass is 50 kg and radius is 0.20 m is mounted so that it turns without friction on its axis, which is fixed. What is the magnitude of the torque acting on the cylinder
Illustrate what is the general direction of the airplane's velocity? east of south, north of west,north of east, or west of south?
A train traveling at v0 = 20.0 m/s begins to brake by applying a velocity-dependent instantaneous acceleration a(v) = ? /(v u) m/s2, where ? = – 24.0 m2/s3, v is the instantaneous velocity of the train, and u = 0.5 m/s. Decide the distance traveled b..
A pogo and rider of 80kg total mass at the high point of a 2.0m jump will drop 1.3m before the pogo plunger touches the ground, What approximate average force does the pogo stick exert on the ground during the landing
A playground is on the flat roof of a city school,6.00m above the street below. The vertical wall of the building is7.00m high, Find the speed at which the ball was launched
A wheel rotates with a constant angular acceleration of 3.75 rad/s2. Assume the angular speed of the wheel is 2.20 rad/s at ti = 0. Through what angle does the wheel rotate between t = 0 and t = 2.00 s
A bartender slides a beer mug at 1.5 m/s towards a customer at the end of a frictionless bar that is 1.2m tall. how far way from the end of the bar does the mug hit
a 10-cm-long thin glass rod uniformly charged to 9.00 and a 10-cm-long thin plastic rod uniformly charged to - 9.00are
A 2.00 meter long horizontal plank whose mass is 3.00 kg is placed so that the very end (the right end) rests on a retaining wall. Find the force acting on the board by the tailgate
A typical nuclear power plant converts 0.01 percent of the mass of its fuel into energy through nuclear reactions. Find how much fuel would be needed to power an average city for one day
A simple pendulum with a length of 2.43 meter and a mass of 6.59 kilogram is given an initial speed of 2.66 meter per second at its equilibrium position. Determine what is the wheel moment of inertia
a battery has an emf and an internal resistance r. when the battery is connected to a 25omega resistor the current
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