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You testify as an expert witness in a case involving an accident in which a car slides into a car that was stopped at a red light along a road headed down a hill. You find that the slope of the hill is è = 12 degree, that the cars were separated by a distance of 24.0 meter when the approaching car starts to slide, and that the speed of the car was 18.0 m/s when it started to slide. Your job is to find the speed of the car when it hits the car stopped at the light. Suppose the coefficient of kinetic friction between the tires and the road is 0.50.
From street level, Superman spots Lois Lane in trouble-the evil villain, Lex Luthor, Determine how long Superman takes to reach her
A 2.40 H coil with a resistance of 3.95×10^2 Ohm is in series with a 4.86×10^3 Ohm resistor. What is the peak value of the potential difference across the coil
question a transformer has n1 350 turns and n2 2 000 turns. if the input voltage is ?v t 170 v cos wt what rms
A woman at an airport is towing her 20.0 kg suitcase at constant speed by pulling on a strap at an angle theta above the horizontal. What angle does the strap make with the horizontal
When a certain air-filled parallel-plate capacitor is connectedacross a battery, it acquires a charge (on each plate) of magnitude98 μC. While the battery connection is maintained, adielectric slab is inserted into the space between the capacitorplat..
A horizontal light ray is incident on a plate glass prism, where ? = 28.5°. Calculate the angle of deviation ? of the ray --- the angle that the ray emerging from the prism makes with the incident ray. (in deg) A: 1.58×101 B: 2.10×101 C: 2.80×101 D: ..
What is the required resistance of an immersion heater that will increase the temperature of 0.50 kg of water from 10.0°C to 50.0°C
you live on a busy street but as a music lover you want to reduce the traffic noise. if you install special
A standing wave interference pattern is set up by radio waves among two metal sheets 3.80 ma part. That is the shortest distance among the plates that will produce a standing wave pattern. What is the fundamental frequency?
a an ideal gas occupies a volume of 3.0-cm3 at 20degc and atmospheric pressure. determine the number of molecules of
How does the solar nebula theory describe the dramatic density difference between the terrestrial and Jovian planets.
A uniform upward directed electric field of magnitude 1.4*10^-6 N/C has been setup between tow horizontal plates by charging the lower plate positively abnd the lower plate negatively, what is the vertical deflectio of the mass when it exits the pl..
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