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I have 3 questions, please show work so I can learn how to do the problems on my own.
1. An electric field E in N/C, right causes the m in grams ball in the figure to hang at a T degree angle. What is the charge on the ball in nanoCoulombs?
2. What is the magnetic flux through the loop shown in the figure? B=5.49 T, G=1.73 T and L=46.62 cm.
3. A straight wire carrying a current of 40.27 A lies along the axis of a 9.34 cm-diameter solenoid. The solenoid is 0.68 m long and has 221.06 turns carrying a current of 6.18 A. What is the magnitude of the magnetic field, in mT, 1.82 cm from the wire?
Why does the final electron energy not depend on the grid voltage?
An archer shoots an arrow at a 75.0 m distant target; the mull's eye of the target is at the same height as the release height of the arrow. At what angle must the arrow be released to hit the bull's eye if its initial speed is 35.0 m/s
Suppose a recently found elementary particle has an average life time, T = 10.6 ns, when at rest. find how fast must it be moving relative to the velocity of light
A cameraman on a pickup truck is traveling westward at 18 km/h while he videotapes a cheetah that is moving westward 32 km/h faster than the truck. find its acceleration from the prespective of the cameraman
A 4.8 Hz wave with an amplitude of 12 cm and a wavelength of 27.0 cm travels along a stretched horizontal string. How far does a knot on the string travel in the same time interval
A particular heat engine has a mechanical power output of4.80kW and an efficiency of26.0%. The engine expels8.90103J of exhaust energy in each cycle. Find the energy taken in during each cycle.
The block slides down the ramp over a distance d until it reaches the bottom of the ramp. How much of its original total energy (in J) survives as KE when it reaches the ground?
A 150 ohm resistor, a 30 mH inductor and a 2 uF capacitor are connected in series with a 120 V rms source at 1500 Hz. What is the impedance of this circuit
A P-wave with an angle of incidence of 22 (degrees) encounters a contact between two different rock types. The upper layer has a compressional wave velocity of 2700 m/s. The lower layer has a shear velocity of 1100 m/s. Calculate the angle of refr..
A trap door, of length and width 2.75 m, is held open at an angle of 65.0° with respect to the floor. what is the torque exerted on the trap door by the rope
A dentist uses a mirror to examine a tooth that is 1.25 cm in front of the mirror. The image of the tooth is formed 5.0 cm behind the mirror. Determine the mirror's radius of curvature
Earth's atmosphere is constantly bombarded by cosmic ray protons that originate somewhere in space. What would be the electric current intercepted by the total surface area of the planet
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