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A pot containing1.00 liter of water, initially at 20.08C, is placed on a 1000 W electric heating element.
(a) How much heat must be supplied to the water to bring it to a boil?
(b) How much heat is necessary to boil all the wateraway? What is the minimum time required to boil all the water away?
A person pulls on a 50kg desk with a 200 N force acting at a 30 degree angle above the horizontal. The desk does not budge.
An object with a charge of 0.880 µC is placed at the center of a regular icosahedron with 20 equivalent surfaces. What is the electric flux through one surface of the icosahedron?
In a wire with a 1.67-mm2 cross-sectional area, 8.43 × 1020 electrons flow past any point during 3.87 s. What is the current in the wire
Two newly discovered planets follow circular orbits around a star in a distant part of the galaxy. What is the mass of the star
Two .40 kg soccer balls collide elastically in a head on collision. The first l starts at rest and the second ball has a speed of 3.50 m/s after the collision, second ball is at rest. What is the final speed of the first ball.
Given that hbar = 1.055*10^-34 J*s, find the wavelength in nm of light emitted from a hydrogen atom when its electron moves from the n=6 state to the n=2 state. What is the minimum uncertainty in the momentum of the electron
A nail projects 25.0 mm horizontally outward from a wall. A 400 N picture is hung from the end of the nail, what is the diameter of the nail
A particle is trapped in an infinite one-dimensional well of width L = 129 nm. If the particle is in its ground state, evaluate the probability to find the particle. (a) between x = 0 and x = 0.042L (b) between x = 0.042L and x = 0.958L (c) betwee..
What is the horizontal component of velocity
Two very thick equally-magmetized square plates of side 0.23m and of mass 20 g, Calculate the B field between the two plates, if the distance between them is 0.123 cm
A parallel plate capacitor with a capacitance C= 200x10^-12 consists of two copper plates, Calculate the potential(voltage) at a point exactly halfway between the plates
Suppose that a small incandescent light bulb (R=2.88 kilo ohms) is connected to a standard European household AC electrical socket, Find the average power dissipated by the light bulb
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