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Q1. How many 95W light bulbs can you use in a 120V circuit without tripping a 17A circuit breaker? (The bulbs are connected in parallel, which means that the potential difference across each light bulb is V.)
Q2. The electric field 5.0 cm from a very long charged wire is 3000 N/C and directed toward the wire. What is the sign of the charge on the wire? What is the linear charge density λ on the wire? What is the charge Q on a 2.0 cm long segmented of the wire?
You're carrying a 3.6-m-long, 25kg pole to a construction site when you decide to stop for a rest. You place one end of the pole on a fence post and hold the other end of the pole 35cm from its tip.
Multiple comparison procedures are going to be done using the Bonferroni method with α = 0.10. The value of t** is 2.2426. The smallest minimum significant difference (MSD) for finding a difference between groups is computed as 17.68. The correct ..
A rifle fires a 2.39 10-2-kg pellet straight upward, since the pellet rests on a compressed spring that is released when the trigger is pulled. The spring has a negligible mass and is compressed by 9.17 10-2 m from its unstrained length. The pellet r..
A father (m = 90 kg) and son (m = 45 kg) are standing facing each other on a frozen pond. The son pushes on the father and finds himself moving backward at 3 m/s after they have separated. How fast is the father moving.
Assume the data for the three groups are independent and the data are approximately Normal. The P-value is less than 0.01. The correct conclusion is that
A step-up transformer has 300 turns on its primary coil and 90000 turns on its secondary coil if the current flowing through the secondary is 5 amps what is the current flowing in the primary.
Bob, of mass m, drops from a tree limb at the same time that Esther, also of mass m, begins her descent down a frictionless slide. If they both start at the same height above the ground, which is true about their kinetic energies as they reach the gr..
Formulate the above as linear programming problem. Solve (a) by graphical method. Solve using simplex method.
The rocket fires for 10 mins , after that the asteroid is moving at 30 degrees to its original path at the speed of 18 km/h/ Find its average acceleration.
How many revolutions per minute would a 29 {rm m}-diameter Ferris wheel require to make for the passengers to feel "weightless" at topmost point.
An aquarium contains a 5-cm layer of water (n = 1.333) floating on top of carbon tetrachloride (n = 1.461). If an angle of incidence into water from the carbon tetrachloride is 20, what is the angle of refraction into the air.
A student pulls a box of books on a smooth horizontal floor with a force of 100 N in a direction of 37 degrees above the horizontal. If the mass of the box and the books is 40 kg, what is the normal force on box? a. 332 N b. 312 N c. 392 N d. 292 N
What is the magnitude and direction of the magnetic field
Establish the initial volume of the gas . What is the magnitude of normal force that each brake pad applies to the rim.
What is the tension in the string
What is its velocity at impact? What will its average velocity be? What will its average speed be.
F ind the speed of the golf ball just after impact
What is the wavelength of the light in the glass
What is the dissimilarity between sprinters and nonathletes
At 500°C, the diffusion coefficient of Zn in brass is 4.10-17 m2.s-1. What is the flux of Zn moving down the rod.
What is magnitude of the unknown force
What current is required in the windings of a long solenoid that has 1710 turns uniformly dispersed over a length of 0.547 m in order to produce a magnetic field of magnitude 0.0002 T at the center of the solenoid.
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