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If a bungee cord is stretched horizontally to a length of 2.0m , the tension in the cord is 1.9N . A transverse pulse on the cord makes a round trip in 1.5s . A pulse makes the round trip in 1.5s if the cord is stretched to a length of 3.8m .
What is the tension in the 3.8-m-long cord?
A 295 Kg piano slides 4.1 m down a 30 degree incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is .40.
Two tanks are engaged in a training exercise on level ground. The first tank fires a paint-filled training round with a muzzle speed of 237.5m/s, Find the distance between the tanks when the round was first fired
A block of iron has the dimensions of 3.00 cm x 3.00 cm x 3.00 cm. It has a mass of 213 g. When placed in water, the block sinks. What volume of water did it displace.
A closely wound rectangular coil of 85.0 turns has dimensions of 26.0cm by 46.0cm. estimate the average emf induced in the coil
What is the total force on an object if 47.2 pounds upward, and 59.3 lb to the right are acting on it? answer sketching the diagram and show mathematical calculation.
A 3.50-m-long, 360kg steel uniform beam extends horizontally from the point where it has been bolted to the framework of a new building under construction, What is the magnitude of the total torque due to the worker and the force of gravity
The speed of sound in air at room temperature is 340 m/s. What is the frequency of a sound wave in air with wavelength 1.3 m
The current-density magnitude in a certain circular wire is J = (3.10 × 1010 A/m4)r2, How much energy is converted to thermal energy in 2.00 h
A mercury manometer is connected to a container of gas. if the gauge pressure of the gas doubles, what are the new heights of the two columns
The position of an object as a function of time is (3.2t + 1.8t^2)i + (1.7t + 2.4t^2) , where is the time in seconds. Find the magnitude and direction of the object.
A circular coil, with radius of 10 cm, and 25 turns, rotates in a constant magnetic field of strength 2.4 T, If the magnetic field that the coil is in points down the page, which direction does the coil rotate
Batteries are rated in terms of ampere-hours (A h). For example, a battery that can produce the current of 3.00 A for 5.00 h is rated at 15.00 A h. What is the total energy stored in an 8.0-V battery rated at 49.0 A h.
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