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The electric potential in a certain region of space is given by V(x,y,z) = ?xy + ?, in units of volts, where ? = 3.10 V/m2 and ? = 6.06 V are constants. What is the x-component of the electric fi
Skid is going to attempt a field goal by kicking the football from a point 40 yards out from the goal. The ball must clear the cross bar that is 3m off of the ground. Skid kicks the ball with a veloci
Calculate the rate of heat conduction through house walls that are 13.0cm thick and that have an average thermal conductivity twice that of glass wool. Assume there are no windows or doors. The surfac
A. How much heat transfer is nec to raise the temp of a .200kg piece of ice from -20C to 130C including the energy needed for phase changes?B. How much time is required for each stage assuming a const
suppose you attach the object with mass m to a vert spring at rest and let it bounce up and down. you release the object from restat the springs original rest length.show that the spring exerts and up
2.56E+6 J of heat transfer.what is the engines efficency?How much heat transfer to the environment takes place? (1.50E+5 work done) For A.) is got 5.86%, and for B.) i got 2,5597.3???
An elastic cord has an unstreched length of 8.1 m and a cross-section of 2 cm^2. If the Young's Modulus of the material is made from is 310 MN/m^2 what is the effective spring constant of the cord for
An alternative method used to determine the mass of the neutron relied on measuring the energy released in the neutron's capture in atomic hydrogen to form "heavy" hydrogen or deuterium to the reacion
Short pulses of laser light traveling in the x-direction with a diameter of 1 mm are incident on a perfect mirror. The pulses are 10^-13 seconds long and have a repetition rate of 10 Hz, each with an
An electromagnetic wave travelling the +z direction has a maximum magnetic field of 10^-7 T in the negative y direction at z = 0 and t = 0.The magnetic field falls to zero in 3 x 10^-16 seconds.What i
In one fusion research program, a pellet of hydrogen isotopes will be heated and compressed with intense lasers. If a 2-mm diameter pellet is illuminated from the left and the right by laser beams, su
Two neutrons are detected coming out of the nucleus with angles of 30 degrees and 15 degrees. Determine the internal energy change of the nitrogen nucleus.
A charge of 3.10?C is held fixed at the origin. A second charge of 3.10?C is released from rest at the position (1.25 m, 0.570 m).If the mass of the second charge is 2.60g , what is its speed when it
A particle of mass m moves in a potential given by: \(V(x)=-V_{0}a^{2}(a^{2}+x^{2})/8a^{4}+x^{4}\).A particle starts at a great distance from the potential well with a velocity v0 towards the wel
An early (non-quantum) model of the hydrogen atom had a point-like electron undergoing uniform circular motion around a fixed proton at radius r = 5*10^11 m. The problem with this model is t
A heating element in a stove is designed to dissipate 3200 W of heat when it is connected to 245 V. Assuming that the resistance is constant, calculate the current in this element if it is connected t
In the ENGR 10 lab (E391), there are 75 long light bulbs (P=100 W) and 6 regular bulbs (P=60 W). How much energy is consumed lighting the lab during the 3 lab periods (9hours). Calculate the amount of
You are to determine the power rating of the motor in an elevator system. The elevator (with a full load) weights 2000 kg and is required to move upward 3 m/sec at constant speed. The lifting mechanis
The Fermilab Tevatron could accelerate protons (and anti-protons) to kinetic energies of 1000 GeV (1 TeV). By how much (in units of m/s) does the speed of a 1 TeV proton differ from the speed of light
The sound from a church organ "revertebrates" for many seconds after the organ stops producing sound due to reflections inside the church. That is the sound from the organ bounces back and forth off t
A solid insulating sphere of radius a = 3.1 cm is fixed at the origin of a co-ordinate system as shown. The sphere is uniformly charged with a charge density ? = -363 uC/m^3. Concentric with the spher
How many electrons N does it take to make a charge of -1.0 C? A current of 1.2 A passes through a wire for 1.3 minutes. How much total charge ‘q' has been transported? How many electrons N have
A lighter-than-air balloon and its load of passengers and ballast are floating stationary above the earth. Ballast is weight that can be dropped overboard to make the balloon rise. The radius of this
A block of mass 0.2kg is moving with a speed of 5m/s on a horizontal surface enters a rough patch ranging from x=0.1m to x=2.01m. The retarding force Fy, on the block in this range is inversely propor
A prism is made of glass of unknown RI. A parallel beam of light is incident on a face of the prism. The angle of min deviation is measured to be 40 degree. What is the Refractive Index of the prism?