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At what radius (a) inside and (b) outside the capacitor gap is the magnitude of the induced magnetic field equal to half of its maximum value? State your answer in terms of R.
A worker uses a cart to move a load of bricks a distance of 10 m across a parking lot. If he pushes the cart with a constant force of 209 N, what amount of work does he do? Show your work.
Explain the important difference between classical and quantum particles. Discuss the requirements that determine whether a particle obeys Bose-Einstein or Fermi-Dirac statistics.
The block is originally rotating in a circle of radius 35 cm with angular speed 0.90 rad/s. The string is then pulled from below until the radius of the circle is 20 cm. You may treat the block as
A flight attendant at an airport is towing her 80 N-suitcase at a constant speed by pulling on a strap with a 40N a an angle 57 above the horizontal. She pulls the back 300m across the floor. Find t
The boxes slide horizontally across a ramp of unknown kinetic coefficient of friction, coming to rest over a distance of 15m where a worker picks them up. What is the speed of the boxes at the botto
If you require the wavelength of electron-beam for an electron microscope which is 10 times shorter than that in the part (a) what should be the energy of electrom beam? How can such energy be inpar
The Child can push with a constant force of 3.20N. Use the Work-Kinetic Energy Theorem to find the speed of the car at the end of a 1.50m push.
A proton experiences an electric force of 95.2 fN (1 fN = 1 fem to newton = 1E-15 N) in a uniform electric field. How strong is the electric field (in N/C)?
Calculate the work (in J) required to move the test charge to a point 6.7 cm closer to either of the charges.
A small, 2.00-mm-diameter circular loop with R = 1.1x10^-2 ohms is at the center of a large 120-mm-diameter circular loop. Both loops lie in the same plane. The current in the outer loop changes fro
If the original frequency is held constant and the tension in the wire is increased by a factor of 9, how many loops are present in the new pattern?
A bug standing on the axis decides to crawl out to the other end of the rod. When the bug (whose mass is 5 x 10-3kg) gets where it's going, what is the change in the angular velocity of the rod?
Determine the rates of radiation heat transfer between this person and the surrounding surfaces in both summer and winter if the exposed surface area, emissivity, and the average outer surface tempe
Assume that the convective heat transfer coefficient between ambient air outside and the outide wall(with insulation) is 750 W/m^2 K.
A 13-kg ball moving at 24 m/s collides elastically and head-on with a second 5-kg ball moving in the opposite direction with -15 m/s. What is the speed of the first ball after the collision? Give yo
A racetrack has the shape of an inverted cone, as the drawing shows. On this surface the cars race in circles that are parallel to the ground, and the surface is at an angle 31°. For a speed of
The block is then pulled so that the spring stretches to a total length of 0.15 m. The block is released at time t= 0 s and undergoes simple harmonic motion. What is the speed of the block each time
A 2.0kg object is attached to a spring (k= 60.0N/m) that hangs vertically from the ceiling.The object is displaced 0.050m vertically. When the object is released, the system undergoes simple harmoni
During a process 10J o work are performed on a system, while the system itself gives off 5J of heat. The internal energy of the system
Each plate of a parallel-plate capacitor is a square of side 4.75 cm and the plates are separated by 0.415 mm. The capacitor is charged and stores 7.65 nJ of energy. Find the electric field strength
The magnetic flux that passes through one turn of a12-turn coil of wire changes to 3.5Wb from 12.0 Wb in a time of0.100s. The average induced current in the coil is115A. What is the resistance of t
A pingpong ball weighs 0.025 N. The ball is placed inside a cup that sits on top of a vertical spring.the spring is compressed 0.075m and released, the maximum height above the compressed position t
The yellow light from a helium discharge tube has a wavelength of 587.5nm. When this light illuminates a certain diffraction grating it produces a first-order principal maximum at an angle of 1.250.
The fundamental resonance on a string of 60 cm length fixed at both ends is 440 Hz. What is the speed of a wave traveling on this string?