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Two identical mandolin strings under 200 N of tension are soundingtones with frequencies of 455 Hz. Thepeg of one string slips slightly, and the tension in it drops to194 N. How many beats per second are heard?
Hz
A ship carrying freshwater to a desert island in the Caribbean, hasa horizontal cross-sectional area of 2600m^2 at the waterline. How much water was delivered
create a position vs. time speed vs. time and acceleration vs. time graph for both cars. write a paragraph comparing
A car of mass 1110 kg travels at a speed of 20 ms-1 along a straight road. The driver sees a red traffic light ahead, and applies brakes. The coefficient of friction between the car tyres and the road is 0.83. Take the acceleration due to gravity to ..
A speedboat increases its speed uniformly from v1 = 20 m/s to vf = 25 m/s in a distance of 2.40 102 m. (a) Draw a coordinate system for this situation and label the relevant quantities, including vectors.
The Gravitron is an amusement park ride in which riders stand against the inner wall of a large spinning steel cylinder. At some point, the floor of the Graviton drops out, instilling the fear in riders that they will fall a great height.
The drawing shows a coin resting on the bottom of a beaker filled with an unknown liquid. How fast is the light traveling in the liquid
Find out the translational speed at the bottom of the fall where it is horizontal. Ignore the frictional losses and assume mass of the cylinder is distributed uniformly.
A loudspeaker at a rock concert generates 10-2 W/m2 at 18 m at a frequency of 1 kHz. Suppose that speaker spreads its energy uniformly in all directions. What is the intensity level at 18.00m.
An isolated conductor of arbitrary shape has a net charge of +8.6 x 10- 6 C. Inside the conductor is a cavity within which is a point charge q = +3.8 x 10-6 C. determine the charge on the cavity wall
A 12 V battery (which has an electric potential difference of 12 V between its terminals) is connected to a 10 W light bulb for 1 second. Calculate how much charge flows through the light bulb in the 1 second.
The electric potential at aposition located a distance of 21.6 mm from a positive point charge of 8.70×10-9C and 15.1 mm from a second pointcharge is 1.22 kV. Calculate the value of the second charge.
You have a small electromagnet that consumes 300 W from a residential circuit delivering 120 V at 60.0 Hz. find the internal resistance of the electromagnet
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