Find the resistance of the longer wire
A wire with a resistance of 7.1 Ω is drawn out through a die so that its new length is 3 times its original length. Find the resistance of the longer wire, assuming that the resistivity and density of the material are unchanged.
Expected delivery within 24 Hours
A horizontal force of 750 N is needed to overcome the force of static friction between a level floor and a 250-kg crate. What is the acceleration of the crate if the 750-N force is maintained after the crate begins to move and the coefficient of k
What is the current in amperes in a wire of radius R = 2.91 mm if the magnitude of the current density is given by (a) Ja =J0r/R and (b) Jb = J0(1 - r/R) in which r is the radial distance and J0 = 5.87 x 104 A/m2?
You discharge the capacitor through a 4.77-Ω resistor. What is the time constant? After what multiple of the time constant does the potential difference reach 2.47 V?
What is the maximum amount by which the wavelength of an incident photon could change when it undergoes Compton scattering from an atom or molecule with a 60.0 u mass? (1 u = 1.66 x 10-27 kg)."
A spherical cavity of radius 4.50 cm is at the center of a metal sphere of radius 18.0cm. Determine the electric field at a point 6.0 cm from the center of the cavity.
A roller coaster car has a mass of 500 kg when fully loaded with passengers. If at point A, the force exerted by the track on the car is 15000 N. What is the acceleration of the car at point A?
During the measurement the phase of the sample changes from solid to liquid, and then from liquid to gas. The mass of the sample is 10g. What is the latent heat of vaporization of Xu in [J/kg]?
A 653 kg lift starts from rest. It moves upward for 2.8 s with constant acceleration until it reaches a cruising speed of 1.85 m/s. What is the average power of its motor during this period (in kW)?
1934861
Questions Asked
3,689
Active Tutors
1438179
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
The dental hygienist uses a handheld syringe to irrigate the posterior molars following a deep debridement of 6 mm pockets.
Question: A client is using a toothpaste with postassium nitrate. What is the role of the potassium nitrate in this toothpaste?
Question: With motivational interviewing, the focus is on: Question options: the client becoming actively involved in making and maintaining human behaviour
A client has type II embrasure spaces throughout his mouth and a fixed bridge between 13-15. What should the dental hygienist recommend
Problem: Funneling and widening of the coronal margins may be an indication of:
A client has decided to have oral piercings inserted today. Which one of the following rinses is effective for aftercare of oral piercings?
A client presents with 32 teeth and the color of the gingiva is pink, and stippled; the gingival papillae and margins are knife -edge and the consistency is fir