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A car speedometer has a 8% uncertainty. What is the range of possible speeds when it reads 50 km/h? lowest km/h highest km/h (b) Convert this to miles per hour. lowest mi/h highest mi/h
a small object which has a charge q 8.2 microc and mass m 9.80 x10-5 kg is placed in a constant electric field.
What are the sign and magnitude in coulombs of a point charge that produces a potential of-1.50V at a distance of 1.00mm?
At t = 0 a grinding wheel has an angular velocity of 24.0 rad/s. It has a constant angular acceleration of 3.0 rad/s2 until a circuit breaker trips at t = 2.00 s. What was its acceleration as it slowed down
The displacement of a wave traveling in the positivex-direction is y(x,t)=(3.5cm)cos(2.7x?92t), wherex is in m and t is in s, What is the wavelength of this wave
A boy with a mass of 55 kg is hanging from a spring with a spring constant of 240 N/m. With what frequency does the boy bounce up and down
a double convex thin glass lens has equal radii of curvature. the focal length of the lens is 37.3 cm and the index of
Bill and Donna are playing outside when their mother calls them for lunch. Bill is 10.0 m from the house and can run at a speed of 12 km/h. Donna is faster, running at 14 km/h, but is 20.0 m from the house. Draw a graph to determine who gets to t..
A 75 g bungee cord has an equilibrium length of 1.20 m. The cord is stretched to a length of 1.80 m, then vibrated at 20 Hz. This produces a standing wave with two antinodes. What is the spring constant (k) of the bungee cord?
A simple pendulum is 7.00 m long. What is the period of simple harmonic motion for this pendulum if it is located in an elevator accelerating upward at 5.00 m/s2
Determine how far in front of the lens the object should be placed in order to produce an image that is reduced by a factor of 4.45
Lightning can be studied with a Van de Graaff generator, which consists of a spherical dome on which charge is continuously deposited by a moving belt, What is the maximum charge on the dome
The speed of an alpha particle is determined to be 8.75×106 m/s. If all of its kinetic energy is acquired by passing through an electric potential, what is the magnitude of that potential
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