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A hair dryer is rated at 1700 W when connected to a 120 V source. Find the resistance of the hair dryer as well as the current in the hair dryer when it is turned on. Resistance (in ohms): Current (in amperes):
Calculate the UNCERTAINTY of the specific gravity of a liquid given the following information: m = 54.50 +/- 0.05 grams, mA = 33.50 +/- 0.05 grams
When a 47.0-V emf device is placed across two resistors in series, a current of 4.0 A is flowing in each of the resistors. obtain the magnitude of the larger of the two resistances
(a) Determine the magnitude and direction of the electric field at the location of charge q. (Use k_e for the Coulomb constant and q and a as necessary.) Magnitude Direction ° (counterclockwise from the horizontal) (b) What is the total electric f..
Two positive charges, each of magnitude 1 x 10^-6 C, are located a distance of 17 cm from each other. compute the magnitude of the force exerted on each charge
A plate carries a charge of -4 ?C, while a rod carries a charge of 2.50 ?C. How many electrons must be transferred from the plate to the rod
An experimenter bombards a target of 54Cr with alpha particles such as 4He + 54Cr -> p+ 57Mn Suppose the incoming alpha particle has 26MeV kinetic energy in the lab, What is the kinetic energy of the detected proton
Suppose you have a near-point distance of 16 cm. The angular resolution of the eye is determined by diffraction, What is the smallest object your bare eye can resolve
Two charges q1 = 1.1 10-8 C and q2 = -4.8q1 are placed 50 cm apart. Find the point along the straight line passing by the two charges at which the electric field is zero, as measured from q1.
An object has a kinetic energy of 313 J and the momentum of magnitude 24.1 kg·m/s. Find out the speed and the mass of the object.
A DNA molecule (deoxyribonucleic acid) is 2.35 ?m long. The ends of the molecule be-come singly ionized so that there is ?1.60×10^?19 C on one end and +1.60 × 10^?19 C on the other. The helical molecule acts as a spring and compresses 1.50 percent..
a 5.0 kg block slides from rest down a frictionless slope, then enters a flat area where Uk is 0.50. What is the speed of the block at the base of the slope
What must the separation be between a 7.0 kg particle and a 3.5 kg particle in order for their gravitational attraction to have a magnitude of 3.4 10-12 N
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