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Problem: A child is surprised that because of sales tax she must pay $1.95 for a toy marked $1.87.
Part A: What is the effective tax rate on this purchase, expressed as a percentage?
Please show all work to solve the above problem.
An anemometer for measuring wind speed consists of four metal cups, each of mass m = 140 gram, Find the moment of inertia of the anemometer about the axis of rotation
A small light source at the bottom of a swimming pool that is3.0 m deep emits light uniformly in all directions. Anilluminated circle is formed on the surface of the pool due tototal internal reflection. Calculate the diameter of the circle if n =..
A 15kg block is on a ramp which is inclined at 20 degree above the horizontal it is connected by a sting to 19kg mass which hangs over the top edge of the ramp. Assuming that fractional forces might be neglected, what is the magnitude of the accelera..
a particle of mass m slides without friction on a wedge of angle a and mass m that can move without friction on a
A stationary sonar station sends out a sound pulse at 40.000 MHz. It receives a pulse back from an object directly below it with a time delay of 80 ms at a frequency of 39.958 MHz. Determine the vertical speed of the object
A sports car crosses the bottom of a valley with a radius of curvature equal to 80 {rm m}. At the very bottom, the normal force on the driver is twice his weight. Evaluate at what speed is the car traveling?
Your radio station needs a new coaxial cable to connect the transmitter and antenna. One possible cable consists of a 2.0mm diameter inner conductor and an outer conductor with diameter 1.6cm and negligible thickness (see the figure); the maximum saf..
assume the mass of cart 1 is m1 = 234 g and the mass of cart 2 is 181 g. Calculate the energy lost in the collision
A long vertical wire carries an unknown current. Coaxial with the wire is a long, thin, cylindrical conducting surface that carries a current of 75 mA upward. What is the size of the current in the wire
Coherent light with wavelength 599 passes through two very narrow slits, and the interference pattern is observed on the screen a distance of 3.00 from the slits. The first-order bright fringe is a distance of 4.84 from the center of the central b..
A transformer steps up the 120 V rms AC power line voltage to 23 kV rms for a TV picture tube. what is the secondary current
a ring of diameter 7.00 cm is fixed in place and carries a charge of 5.00 microc uniformly spread over its
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