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We use the Ohm's law to measure the resistant. We read meter shown that the voltage is 4.5v and the current is 0.90A. The uncertainty of voltage δV=0.1V current δI=0.05 A . What is the uncertainty of resistant in Ohms.
A 1860 kg truck traveling north at 41 km/h turns east andaccelerates to 60 km/h. What is the change in the truck's kinetic energy
a particle of mass 0.350 kg is attached to the 100 cm mark of a meter stick of mass 0.150 kg. the meter stick rotates
1. a proton moves at a speed of 1560 ms in a direction perpendicular to a magnetic field with a magnitude of 0.97 t. if
A person wearing a seat belt can withstand an acceleration of -310m/s squared. How thick should barriers be to carefully stop a car that hits a barrier at 120km/h.
Bob Richards is production manager of Zychol Chemicals, in Houston Texas, is making his quarterly report, which is to include a productivity examine for his section.
Consider a large 1.54 V carbon-zinc dry cell used in a physics lab to supply 2.15A to a circuit with an internal resistance of 0.12 ohms. How much electrical power does the cell produce
Solid disk of radius 0.5m and mass 5kg is rotating countercw about central pivot with ω=10sec^-1. A constant fictional foce of 3N aplpied on outer edge is used to slow disk to a stop. How long in time does it take for the disk to stop? How many re..
We wish to coat flat glass (n = 1.50) with atransparent material (n = 1.25) so that reflection oflight at wavelength 474 nm is eliminated by interference. What minimum thickness can the coating have to do this
A glass contains 0.25kg of water at 0c, 0.15kg of ice, also at 0c, is added to water and it is noticed that after 11 minutes all the ice has melted and all the water is now at 15c. Assuming that the thermal capacity of the glass may be ignored, ca..
A 0.15 kg ball is placed in a shallow wedge with an opening angle of 150.For each contact point between the wedge and ball, find out the force exerted on the ball. Assume the system is frictionless.
Input an expression for the equivalent resistance of the circuit in terms of R1, R2, R3, and R4. Input an expression using the Req and V for power expended by the circuit. What is the power P, in watts?
An energetic father stands at the summit of a conical hill as he spins his 22 child around on a 5.3 cart with a 2.2m-long rope. The sides of the hill are inclined at 25 degrees. He keeps the rope parallel to the ground, and friction is negligible.
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